Question

A metal cuboid of dimension 22cm*15cm*7.5cm was melted and cast into cylinder of height 14cm.What is its radius

Answer 1

Answer:

volume of cuboid = volume of cylinder

l*b*h = πr^2 h

22*15*7.5 = 22/7*r^2*14

2475 = 44 *r^2

r^2 = 2475/44

r = √ 56.25

so..,.. r = 7.5

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