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Mathematics 11 Online
OpenStudy (anonymous):

What is the exact volume of the cylinder? A. 156 m3 B. 312 m3 C. 1872 m3 D. 2028 m3

OpenStudy (anonymous):

its A right

OpenStudy (haseeb96):

how can we find it because there is no any information given in this question

OpenStudy (anonymous):

Well the volume of a cylinder is \[\pi * r ^{2} * h\]

OpenStudy (anonymous):

sorry open study is being annoying

OpenStudy (anonymous):

13*12 152

OpenStudy (anonymous):

By any chance, do those answer choices have a "pi" in them?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

156 pi m3 all of them

OpenStudy (anonymous):

Well then it's not A. You have to do pi * r^2 * h (which is 12^2 * 13 * pi)

OpenStudy (anonymous):

so then C

OpenStudy (flvs.net):

I agree with comupter

OpenStudy (mrnood):

so instead of guessing look at the drawing what is r? What is r^2 (r * r)? What is h? Use the formula given above

OpenStudy (anonymous):

i keep messing up

OpenStudy (anonymous):

i dont get it

OpenStudy (mrnood):

it is a simple multiplication pi * r *r * h put the values for that into your calculator. If you keep messing up ,then practice until you don't

OpenStudy (anonymous):

Well, as @MrNood said, you have to identify the parts of the cylinder and then use the formula. Here is a diagram for the parts of a cylinder. http://www.numberempire.com/shapes/images/cylinder_main.png

OpenStudy (anonymous):

12*12 144*1872 it is C

OpenStudy (anonymous):

@ComputerNerd ?

OpenStudy (anonymous):

am i right

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

thanks

OpenStudy (mrnood):

12 * 12 *13 * pi = 1872 pi m^3

OpenStudy (mrnood):

you need to be precise

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