A cone has a volume of 462 cu cm and a height of 9 cm. find the radius of its base.
We have
Given: height of the cone, h = 9 cm
Volume of the cone = 462 cm3
To find radius of the cone, we know
Volume = 1/3 πr2h
⇒ 
⇒ 
⇒ 
⇒ 
⇒ r = √49 = 7 cm
Thus, radius is 7 cm.
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