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I am Lyosha [343]
3 years ago
8

This cylinder is 6 inches tall & has a volume of 60πin^3. Find the area of the cross section

Mathematics
1 answer:
Artist 52 [7]3 years ago
6 0

Given:

Height of cylinder = 6 inches

Volume of cylinder = 60π in³

To find:

The area of the cross section.

Solution:

Volume of cylinder:

V=\pi r^2h

\pi r^2h=60\pi

Cancel the common factor π on both sides.

r^2h=60

Substitute h = 6.

r^2\times 6=60

Divide by 6 on both sides, we get

r^2=10

Taking square root on both sides.

r=\sqrt{10} inch

Area of cross section = \pi r^2

                                   =\pi (\sqrt{10} )^2    

                                   =10 \pi in²

The area of the cross section is 10π in².

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