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What’s the volume of this

What’s the volume of this-example-1

1 Answer

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Given:

The height of the cylinder = 12 in

The diameter of the base of the cylinder = 8 in.

To find:

The volume of the cylinder.

Solution:

The diameter of the base of the cylinder is 8 in. The radius is half of its diameter. So,


r=(8)/(2)


r=4

So, the radius of the base of the cylinder is 4 in.

The height of the cylinder, h = 12 in.

Base area of the cylinder is:


B=\pi r^2

Where, B is the base area and r is the radius.


B=\pi (4)^2


B=16\pi

So, the base area is
16\pi square inches.

The volume of the cylinder is:


V=\pi r^2h


V=Bh

Where, r is radius, h is height, B is base area.

Putting
B=16\pi and
h=12, we get


V=(16\pi )12


V=192\pi

So, the volume is
192\pi cubic inches.

Therefore,
r=4\text{ in}, h=12\text{ in},B=16\pi \text{ in}^2,V=192\pi \text{ in}^3.

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