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The volume of this cylinder is 14,130 cubic yards. What is the radius? Use ​ ≈ 3.14 and round your answer to the nearest hundredth. the height is 20 yd
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39 votes
39 votes
The volume of this cylinder is 14,130 cubic yards. What is the radius?

Use ​ ≈ 3.14 and round your answer to the nearest hundredth.

the height is 20 yd

User Darkdeamon
by
3.1k points

1 Answer

28 votes
28 votes
Answer - radius is 15 yds

Step by step

Formula is V = pi radius^2 height

So

14,130 = (3.14) (r^2) (20)

14,130 = 62.8 r^2

Divide both sides by 62.8 to isolate radius

225 = r^2

Take square root of both sides to solve for radius.

15 = radius
User Natachia
by
2.3k points
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