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12-09-2020
Computers and Technology

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16.
A cone has a volume of 4950 cm². If its vertical height is 21 cm, find its base radius.

take PI = 22/7

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12-09-2020

Answer:

r = 15 cm

Explanation:

formula

V = πr²×h/3

replace

4950 = 22/7×r²×21/3

4950 = 22/7×r²×7

4950 = 22×r²

r² = 4950/22

r² = 225

r = √225

r = √15²

r = 15 cm

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