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docker41 [41]
3 years ago
13

A child rolls a ball on a level floor 3.6 m to another child. if the ball makes 18.0 revolutions, what is its diameter?

Mathematics
1 answer:
victus00 [196]3 years ago
3 0
To find the diameter, find the circumference, i.e the length covered in one revolution, and then subject the diameter from formulas.

Circumference = 3.6 ÷ 18 = 0.2m = 2πr

πr = 0.2 ÷ 2 = 0.1

r = 0.1 ÷ (22/7) = (0.1 * 7) ÷ 22 = 0.7 ÷ 22

r = 0.0318

Diameter = 2r

Diameter = 2 * 0.0318 = 0.0636m ...//Ans ...
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