Math Is Fun Forum

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 706

Re: Mensuration

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Hi,

Good attempt!

M # 604. Base area of a cone is 81π, height 12. Calculate 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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Hi,

M # 605. Calculate the surface area of a sphere of volume

cubic centimetres.

---

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.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 706

Re: Mensuration

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Hi,

Neat work!

M # 606. Three solids of a square pyramid, a cone and a sphere have been carved out from three solid cubes of the same size. Find the volume of each solid.

---

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.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 706

Re: Mensuration

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Well tried!

M # 607. All the edges of a square pyramid area of equal length. The height of the pyramid is 12 centimetres. What is 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.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 706

Re: Mensuration

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Keep trying!

M # 608. All edges of a square pyramid are equal. Total length of all the edges is 96 cm. Find the volume of the square pyramid.

---

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.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 706

Re: Mensuration

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Well done!

M # 609. Slant height of a square pyramid is 25 cm and its surface area is 896 square centimetres. Find the volume of the square pyramid.

---

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.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 706

Re: Mensuration

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Hi,

.

Neat work!

M # 610. Find the ratio of base edge, slant height, and height of a square pyramid with its edges equal.

---

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.

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 706

Re: Mensuration

---

"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Hi,

Keep trying!

M # 611. A solid sphere is cut into two hemispheres. From their spheres, a maximum size of a square pyramid and cone are cut off. What is the ratio of their volumes?

---

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: 48,385

Re: Mensuration

Hi,

M # 612. The central angle of a sector is 216° and radius 25 cm has been rolled up to form a cone. Find the radius, height, and volume 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.

Denominator

Member

Registered: 2009-11-23

Posts: 220

Re: Mensuration

Hello,

Last edited by Denominator (2020-12-01 12:06:17)

---

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Hi,

Neat work!

M # 613. The base radius of a cone is two times the height. It is melted and recasted into cones of same height and radius half the height. How many cones can be made?

---

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: 48,385

Re: Mensuration

Hi,

M # 614. Two hemispheres are attached together to get a sphere. Surface area of each hemisphere is 60 sq cm. Find the surface area of the 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.

irspow

Member

Registered: 2005-11-24

Posts: 1,055

Re: Mensuration

---

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Hi,

Well tried!

M # 614. A square pyramid is made from a sold cube having edge 30 cm.Find the surface area of the pyramid. (Approximately)

---

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.

Denominator

Member

Registered: 2009-11-23

Posts: 220

Re: Mensuration

Hello

Last edited by Denominator (2021-01-24 12:46:33)

---

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Hi,

Excellent!

615. The lateral face of a square pyramid are all equilateral triangles. Find the ratio of its height and slant height.

---

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.

irspow

Member

Registered: 2005-11-24

Posts: 1,055

Re: Mensuration

---

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Mensuration

Hi,

Excellent!

M # 616. A cone of height 8 centimetres is to be made using a sector of circle of radius 10 centimetres. What should be the central angle of the sector?

---

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.