Question

Which expression can be used to find the volume of the cylinder in this composite figure?

8 cm
4 cm
7 cm
= Bh= x(4)-(7)
V=Bh= *(7) (4)
V=Bh= x(4) (8)
V=Bh= x(8) (7)
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Answer 1

the answer is A

Explanation:

i just took the text and got a 100%

Answer 2

The volume of the cylinder is
`112\pi\ cm^(3)`

Explanation:

we know that

The volume of the cylinder is equal to

`V=Bh`

where

B is the area of the base

h is the height of the prism

`B=\pi r^(2)`

In this problem we have

`r=4\ cm`

`h=7\ cm`

substitute

Find the area of the base B

`B=\pi (4^(2))`

`B=16\pi\ cm^(2)`

substitute in the formula of the volume

`V=16\pi (7)`

`V=112\pi\ cm^(3)`