Q. 34.2( 50 Votes )
A metal cuboid of dimension 22 cm. × 15 cm. × 7.5 cm. was melted and cast into a cylinder of height 14 cm. What is its radius?
Given, A metal cuboid of dimension 22 cm. × 15 cm. × 7.5 cm. was melted and cast into a cylinder of height 14 cm
According to the question the volume remains same after casting the cuboid inti cylinder, i.e. lbh = πr2h.
22 × 15 × 7.5 = 3.14 × r2 × 14
r = 7.5cm
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