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24-11-2020
Mathematics

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PLEASE HELP (PRE ALGEBRA)

PLEASE HELP PRE ALGEBRA class=

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24-11-2020

Answer: r = 4

Step-by-step explanation:

V = pi * r^2 * h

144 * pi = pi * r^2 * 9

Divide by pi

144 = r^2 * 9

Divide by 9

16 = r^2

Take square root of both sides

rad(16) = rad(r^2)

4 = r

r = 4

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