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CBSE Class 9 Answered

A hemispherical bowl is made of steel, 0.7 cm thick has inner radius 14 cm. It is to be polished from inside and outside. Calculate the total area to be polished.
Asked by Topperlearning User | 18 Oct, 2017, 02:56: PM
answered-by-expert Expert Answer

Given inner radius (r ) = 14 cm, thickness = 0.7 cm

⇒ Outer radius (R) = 14cm + 0.7 cm = 14.7 cm

Let S be the sum of inner and outer curved surface area of the bowl to be polished.

 

Error converting from MathML to accessible text.

Total area of hemisphere bowl to be polished is 2590.28 cm2



Answered by | 18 Oct, 2017, 04:56: PM

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