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# area watch

1. is i know the are of a cylinder is 16pie cm3! how to i find the height, h, in terms of r ?
2. First you don't have an area, you have a volume if it's cm^3

Write the formula for the volume or surface area of a cylinder and make it equal 16pi

Then rearrange to make h the subject of the formula

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3. Do you mean surface area or volume? As you've said area but states cm^3.

Formula for volume: pi*r^2*h
Formula for area: 2pi*r^2 + 2pi*r*h

Depending on which your 16pi relates to you can set the formula equal to 16pi and rearrange.

Edit: I was too slow lol

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4. (Original post by Bruhh)
Do you mean surface area or volume? As you've said area but states cm^3.

Formula for volume: pi*r^2*h
Formula for area: 2pi*r^2 + 2pi*r*h

Depending on which your 16pi relates to you can set the formula equal to 16pi and rearrange.

Edit: I was too slow lol

Posted from TSR Mobile
so for that misunderstanding i meant volume! so:

16pi*=pi*r^2h therefore pi* cancels leaving 16=r^2h !

so does this give you a final answer of 16/r^2=h
5. (Original post by kyra.wilson)
so for that misunderstanding i meant volume! so:

16pi*=pi*r^2h therefore pi* cancels leaving 16=r^2h !

so does this give you a final answer of 16/r^2=h
Yep, from what you've said the question was that seems perfect to me.
6. Boringgggggggggggg

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