Question

A metal cuboid of dimensions 22cm ×15cm×7.5cm.was melted and cast into a cylinder of height 14cm. what is its radius?
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Answer 1

Answer:Volume of cuboid = 15*22*7.5=2475 cm^3

Volume of cylinder = pi*r^2*h

2475 cm^3= 22/7*14*r^2

2475*7/22*14= r^2

56.25= r^2

r= root of 56.25

r= 7.5 cm

Therefore radius of the cylinder is 7.5 cm

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