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Practice mode Volume and Surface Area

A metal cuboid measuring 44 cm by 21 cm by 10 cm is melted and recast into a cylinder of base radius 7 cm. Taking π = 22/7, what is the height of the cylinder?

Correct answer A. 60 cm

Explanation

Cuboid volume = 44 x 21 x 10 = 9240 cu cm. Cylinder base area = 22/7 x 49 = 154 sq cm. Height = 9240 / 154 = 60 cm.

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