Question

PLEASE HELP:

A cylinder has a base area of 28.2 m2 and a height of 3.1 m. Estimate the volume of the cylinder.

A) 31 m^3
B) 84 m^3
C) 31 m^2
D) 84 m^2

Answer 1

For starters, the answer can't be C or D because the unit of volume is always cubed. The formula for volume of cylinder is (pi)(r^2)(h) .

The pi(r^2) part is the formula for area of a circle which is what the base of the cylinder is. Fortunately the area is already given as 28.2.

Plug that into the volume formula and plug in 3.1 for the height and multiply. I get 87.42 and the answer choice B seems to be the closest option.

Hope that helps!

Could you help me out? or send ppl to my question?? PLEASE

Answer 2

Yeah, I kept getting 87.42 as well, so I'm going with B. Thanks.

Answer 3

You're welcome! Was it the right answer?

Answer 4

Not sure. I still have a lot of the test to do with several other questions I don't know how to do.

Answer 5

It's just an online practice test, but it counts