4. If the volume of a right circular cone of height 9 cm is 48 cm', find the diameter of its
base.
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Step-by-step explanation:
volume of right circular cone= 1/3 πr^2 h
48 = 1/3 × π × r^2× 9
48 = π×r^2× 3
48/3= π × r^2
16= πr^2
r= √16/π
r= 4√1/π
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