Unit-12 Mensuration

In this unit you will learn rules of measurement of length, area and volume.

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The radius and height of a metallic right circular cylinder are 4.2 cm. and 5.6 cm., respectively. It is melted and recast into a sphere. Find the surface area of the sphere?

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Learning Pundits Content Team

Written on Jun 24, 2019 6:00:27 PM

The volume of the recast sphere is π × (4.2)2 × 5.6 cm3. Using E35), required surface area is 3√(36 × π × (volume)2) = 221.76 cm2 .

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