Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#3076 2014-10-08 18:13:09
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3077 2014-10-09 00:53:04
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
The solution #2026 is perfect. Excellent!
#2027. Find the curved surface area and total surface area of a hollow hemisphere whose outer and inner radii are 4.2 centimeters and 2.1 centimeters respectively.
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
#3078 2014-10-09 19:00:53
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi,
#2028. Find the volume of a cylinder whose radius is 14 centineters and height 30 centimeters.
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
#3079 2014-10-09 19:30:49
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3080 2014-10-10 00:35:24
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
The solution #2028 is perfect. Neat work!
#2029. The volume of a solid cylinder is 62.37 cubic centimeters. Find the radius if its height is 4.5 centimeters.
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
#3081 2014-10-10 01:08:28
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3082 2014-10-10 08:27:34
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
The solution #2029 is correct. Marvelous!
#2028. The radii of two right circular cylinders are in the ratio 2:3. Find the ratio of their volumes if their heights are in the ratio 5:3.
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
#3083 2014-10-10 19:12:34
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3084 2014-10-11 00:04:30
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
the solution #2028 is correct. Remarkable!
#2029. The radius and a cylinder are in the ratio 5:7. If its volume is 4400 cubic centimeters, find the radius of the cylinder.
.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
#3085 2014-10-11 00:17:55
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3086 2014-10-11 09:06:24
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
That was a typo. Regretted.
The amended problem :
The radius and height of a cylinder are in the ratio 5:7. If its volume is 4400 cubic centimeters, find the radius of the cylinder.
#2930. A rectangular sheet of metal foil with dimensions 66 centimeters x 12 centimeters is rolled to form a cylinder of height 12 centimeters. Find the volume of the cylinder.
.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
#3087 2014-10-11 13:16:46
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3088 2014-10-12 00:52:05
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
The solutions #2029 and #2030 are corret. Splendid!
(NB : The correct problem numbers are #2029 and #2030.)
#2031. Radius and slant height of a cone are 20 centimeters and 29 centimeters respectively. Find its volume.
.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
#3089 2014-10-12 03:38:34
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
#2032. The circumference of th base of a 12 meter high wooden solid cone is 44 meters. Find the volume.
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
#3090 2014-10-12 03:42:13
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3091 2014-10-12 07:25:13
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
The solution #2031 is correct. Excellent!
The problem #2032 is yet to be solved.
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
#3092 2014-10-12 10:04:35
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3093 2014-10-12 14:05:55
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
#2033. The radius and height of a right circular cone are in the ratio 2:3. Find the slant height if its volume is 100.48 cubic meters.
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
#3094 2014-10-12 21:11:45
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3095 2014-10-12 22:41:06
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
The solution #2033 is correct. Remarkable!
#2034. The volume of a cone with circular base is
cubic centimeters. If the base radius is 9 centimeters, then find 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
#3096 2014-10-13 10:32:05
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
#2035. The outer and the inner radii of a hollow sphere are 12 centimeters and 10 centimeters respectively. Find its volume.
.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
#3097 2014-10-13 14:03:24
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#3098 2014-10-14 01:04:49
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi bobbym,
The solution #2034 is correct. Excellent!
#2036. The volume of a hemisphere is
cubic centimeters. Find its curved surface area..
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
#3099 2014-10-14 07:52:16
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,418
Re: Oral puzzles
Hi,
#2037. Find the volume of the largest right circular cone that can be cut of a cube whose edge is 14 centimeters.
.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
#3100 2014-10-14 09:02:37
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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