Question

A metal cuboid of dimension 22cm×15cm×7.5cm was melted and cast into a cylinder of height 14 cm what is its radius

Answer 1

Volume of cuboid=
length ×breadth × height
So volume=> 22×15×7.5=2475 c.m³
Volume of cylinder=>πr²h
Height of cylinder =14c.m
As volume remain same so
πr²h =2475c.m³
r²×43.96= 2475c.m³
r²=56.3 c.m²
r= 7.5c.m
Radius of cylinder is 7.5c.m

Answer 2

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