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?

Answer :

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 = πr^{2}h.

22 × 15 × 7.5 = 3.14 × r^{2} × 14

r^{2} =

r =

r = 7.5cm

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The volume of a cylinder is 308 cm^{3}. Its height is 8 cm. Find its later surface area and total surface area.

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?

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