Math Is Fun Forum

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym,

The solutions #5167 and #5168 are correct. Marvelous, bobbym!

#5169. A tank is 25 meters long, 12 meters wide and 6 meters deep. What is the cost of plastering its walls and bottom at 75 cents per square meter?

#5170. The dimensions of a room are 10 m x 7 m x 5 m. There are two doors and three windows in the room. The dimensions of the door are 1 m x 3 m. One window is of size 2 m x 1.5 m and the other are of size 1 m x 1.5 m. Find the cost of painting the walls at $3 per square meter.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym,

The problems #5169 and #5170 are unanswered. Please note.

---

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.

KCA

Member

Registered: 2014-08-01

Posts: 6

Re: 10 second questions

hi Ganesh,

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi KCA and bobbym,

#5171. The cost of papering the four walls of a room is $475. Each one of the length, breadth and height of another room is double that of this room. Find the cost of the  walls of this new room.

#5172. The base of a triangle is 15 centimeters and the height is 12 centimeters. What is the height of another triangle of double the area , having the base 20 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.

KCA

Member

Registered: 2014-08-01

Posts: 6

Re: 10 second questions

Hi Ganesh,

 

Last edited by KCA (2014-08-02 19:18:11)

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi KCA,

The solutions #5171 and #5172 are correct. Brilliant!

#5173. The area of a right-angled triangle is 40 times its base. What is its height?

#5174. The sides of a triangle are 5 centimeters, 12 centimeters and 13 centimeters. Find its 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.

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym,

The solutions #5173 and #5174 are correct. Good work!

#5175. The sides of a triangle are in the ratio

. If the perimeter is 52 centimeters, then what is the length of the smallest side?

#5176. The area of a triangle is 216 square centimeters and its sides are in the ratio 3:4:5. Find the perimeter of the triangle.

---

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.

KCA

Member

Registered: 2014-08-01

Posts: 6

Re: 10 second questions

Hi Ganesh,

             

             

Last edited by KCA (2014-08-03 18:08:52)

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi KCA and bobbym,

The solutions #5175 and #5176 are correct. Brilliant, KCA and bobbym!

#5177. The sides of a triangle are 3 centimeters, 4 centimeters and 5 centimeters. Find the area (in square centimeters) of the triangle formed by joining the midpoints of the sides of this triangle.

#5178. One side of a right-angled triangle is twice the other, and the hypotenuse is 10 centimeters. Find the area of the triangle.

---

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.

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym,

The solutions #5177 and #5178 are correct. Smart work!

#5179. The perimeter of a right-angled triangle is 60 centimeters. Its hypotenuse is 26 centimeters. Find the area of the triangle.

#5180. If the perimeter of an isosceles triangle is

meters, then what is the area of the triangle?

---

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.

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym,

The solutions #5179 and #5180 are correct. Splendid!

#5181. The perimeter of a triangle is 30 centimeters and its area is 30 square centimeters. If the largest side measures 13 centimeters, then what is the smallest side of the triangle?

#5182. If the area of an equilateral triangle is

square centimeters, then what is its perimeter?

---

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.

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym,

The solutions #5181 and #5182 are correct. Immaculate, bobbym!

#5183. The height of an equilateral triangle is 10 centimeters. Find its area.

#5184. From a point in the interior of an equilateral triangle, the perpendicular distance of the sides are √3 centimeter, 2√3 centimeter and 5√3 centimeter. Find the perimeter in centimeters of the triangle.

---

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.

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym,

The solution #5184 is correct. Neat work!

#5185. If x is the length of a median of an equilateral triangle, then what is its area?

#5186. If the area of a square with side 'a' is equal to the area of a triangle with base 'a', then find the altitude of the triangle.

---

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.

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym,

The solution #5185 is correct. Excellent!

#5187. An equilateral triangle is described on the diagonal of a square. What is the ratio of the of the triangle to that of the square?

#5188. What will be the ratio between the area of a rectangle and the area of a triangle with one of the sides of the rectangle as base and a vertex on the opposite side of the rectangle?

---

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.

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,420

Re: 10 second questions

Hi bobbym,

Regarding #5187, I meant the ratio of the areas. You are right.

The solution #5188 is perfect. Brilliant!

---

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.