Question

A rectangular cuboid is melted and recast into a cylinder of height 7 cm.if the dimension of cuboid are 11cm× 8cm× 6cm. find the radius of the cylinder​

Answer 1

height of cylinder= 7cm

let radius of cylinder be r cm.

length of the cuboid = 11cm.

breath of the cuboid= 8 cm

height of the cuboid = 6 cm.

volume of the cylinder = volume of the cuboid

πr²h = lbh

22/7×7r² = 11×8×6

22r² = 528

r² = 528/22 = 24

r = 4✓3 cm