A hemispherical bowl is covered with a conical cap find the total surface area and and the toal air contained in it . Given that total height of the bowl plus the cap is 17 cm and the radius is 7 cm.
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hence we need to be find Outer Radius
Given
Inner radius = 5 cm
Hence Outer radius = r = 5 +0.25 cm = 5.25cm
:: Outer curved surface = 27²
= (2xx 5.25 x 5.25) cm²
= 173.25 cm²
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