Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫  π  -¹ ² ³ °

You are not logged in.

## #551 2017-03-19 18:32:22

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 108,430

### Re: Mensuration

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

## #552 2017-03-19 21:26:35

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,547

### Re: Mensuration

Hi;

The solution M #241 (three parts) is correct. Neat work, bobbym!

M #242. (a) The area of the base of a cylinder is 36.75 square centimeters and its height is 12 cm. Find its volume.

M #242. (b) How much earth will be excavated from a circular well 17.5 m deep and 2 m base diameter?

M #242. (c) A cylinder of maximum volume is cut out from a solid metal cuboid of length 20 cm and cross section a square side is 14 cm. Find the volume of the metal wasted.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

## #553 2017-03-20 11:47:02

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 108,430

### Re: Mensuration

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

## #554 2017-03-20 14:41:13

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,547

### Re: Mensuration

Hi;

The solutions M #242 (a) and (b) are correct. Good work, bobbym!

Please post your reply to M #242 (c).

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

## #555 2017-03-20 20:18:18

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 108,430

### Re: Mensuration

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

## #556 2017-03-20 20:43:20

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,547

### Re: Mensuration

Hi;

M #243. The total surface area of a right circular cylinder is 1540 sq cm. If the height is four times the radius of the base, find the height of the cylinder.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

## #557 2017-03-20 23:13:43

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 108,430

### Re: Mensuration

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

## #558 2017-03-20 23:29:08

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,547

### Re: Mensuration

Hi;

The solution M #243 is correct. Neat work, bobbym!

M #244. The ratio of the radius of the base and the height of a cylinder is 2:7, find the radius of the cylinder if its volume is 5632 cc.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

## #559 Yesterday 20:34:13

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 108,430

### Re: Mensuration

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

## #560 Yesterday 21:22:01

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,547

### Re: Mensuration

Hi;

The solution M #244 is correct. Neat work, bobbym!

M #245. The area of the curved surface of a cylinder is 4400 sq.cm. and the circumference of its base is 110 cm. Find the height of the cylinder.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

## #561 Yesterday 23:53:55

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 108,430

### Re: Mensuration

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

## #562 Today 00:22:13

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,547

### Re: Mensuration

Hi;

The solution M #245 is correct. Keep it up, bobbym!

M #246. The area of the curved surface of the cylinder is 704 sq.cm. and its height is 8 cm. Find the capacity of the cylinder in liters.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

## #563 Today 04:27:01

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 108,430

### Re: Mensuration

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

## #564 Today 16:53:56

ganesh
Moderator
Registered: 2005-06-28
Posts: 22,547

### Re: Mensuration

Hi;

The solution M #246 is correct. Neat work, bobbym!

M #247. The minute hand of a clock is 10 cm long. Find the area of the face of the clock described by the minute hand between 8 A.M. and 8.45 A.M.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

## #565 Today 17:25:09

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 108,430

### Re: Mensuration

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

## Board footer

Powered by FluxBB