Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#2776 2011-07-18 18:21:37
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2777 2011-07-18 22:58:13
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 50,640
Re: 10 second questions
Hi bobbym,
The solutions 3042 and 3043 are perfect. Excellent!
#3044. 12 spheres of the same size are made from melting a solid cylinder of diameter 16 cm and height 2 cm. Find the diameter of each sphere.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#2778 2011-07-18 23:15:17
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2779 2011-07-18 23:32:49
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 50,640
Re: 10 second questions
Hi bobbym,
The solution #3044 is perfect. Good work!
#3045. A General wishes to draw up his 36,581 soldiers in the form of a square. After arranging them, he found that some of them are left over. How many are left?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#2780 2011-07-18 23:36:42
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2781 2011-07-19 16:50:38
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 50,640
Re: 10 second questions
Hi bobbym,
The solution #3045 is correct. Good work!
#3046. A cylindrical tub of radius 12 cm contains water up to a depth of 20 cm. A spherical iron ball is dropped into the tub and thus the level of water is increased by 6.75 cm. What is the radius of the ball?
#3047. A solid metallic spherical ball of diameter 6 cm is melted and recast into a cone with diameter of the base as 12 cm. What is the height of the cone?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#2782 2011-07-19 20:13:04
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2783 2011-07-20 00:38:02
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 50,640
Re: 10 second questions
Hi bobbym,
The solutions #3046 and #3047 are correct. Brilliant performance!
#3048.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#2784 2011-07-20 00:47:03
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2785 2011-07-20 03:30:51
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: 10 second questions
hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#2786 2011-07-20 23:56:40
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 50,640
Re: 10 second questions
Hi bobbym and anonimnystefy,
The solution #3048 is perfect. Brilliant work!
#3049. If
, then what is the value of x?#3050. If
, then what is the value of x?It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#2787 2011-07-21 00:12:03
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: 10 second questions
hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#2788 2011-07-21 00:18:54
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2789 2011-07-22 00:49:53
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 50,640
Re: 10 second questions
Hi anonimnystefy and bobbym,
The solution #3050 is correct, anonimnystefy! Well done!
The solutions #3049 and #3050 are correct. Good work, bobbym!
(The solution #3049 is
)#3051. An iron cube of side 10 cm is hammered into a rectangular sheet of thickness 0.5 cm. If the sides of the sheet are in the ratio 1:5, find the sides.
#3052. Three cubes of iron whose edges are 6 cm, 8 cm, and 10 cm respectively are melted and formed into a single cube. Find the edge of the new cube.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#2790 2011-07-22 00:56:03
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: 10 second questions
hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#2791 2011-07-22 01:00:25
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2792 2011-07-22 17:38:19
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 50,640
Re: 10 second questions
Hi,
The solution #3052 is correct. Good work, anonimnystefy!
The solutions #3051 and #3052 are both correct. Excellent, bobbym!
#3053. The dimensions of a piece of iron in the shape of a cuboid are 270 cm x 100 cm x 64 cm. If it is melted and recast into a cube, then what would be the surface area of the cube?
#3054. If the volume of a cube is 729 cubic centimeters, what would be the surface area of the cube?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#2793 2011-07-22 17:42:23
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2794 2011-07-23 17:50:43
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 50,640
Re: 10 second questions
Hi bobbym,
The solution #3054 is correct. Well done!
#3055. A square and an equilateral triangle have equal perimeters. If the diagonal of the square is
cm, then find the area of the triangle.#3056. If the side of an equilateral triangle is decreased by 20%, then the area is decreased by what percent?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#2795 2011-07-23 18:10:54
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2796 2011-07-23 18:55:35
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 50,640
Re: 10 second questions
Hi bobbym,
The solutions #3055 and #3056 are perfect. Excellent!
#3057. An article was sold for $144. If the percentage of profit was numerically equal to the cost price, find the cost of the article.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#2797 2011-07-23 19:19:27
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2798 2011-07-23 21:58:20
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: 10 second questions
hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#2799 2011-07-23 23:16:00
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 50,640
Re: 10 second questions
Hi bobbym and anonimnystefy,
The solution
Excellent, anonimnystefy!
#3058. A tank is
full. If 16 liters of water is added to the tank, it becomes full. What is the capacity of the tank?It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#2800 2011-07-23 23:18:21
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: 10 second questions
hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline