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The base of a cone with diameter 21 cm and slant height 12 cm is hemispherical. Find the total surface area of the solid.

Answer

Given: A cone with hemispherical surface.
Slant Height
diameter
Total surface area= Total surface Area
of cone + Total surface area of Hemisphere
Total surface area of cone
But since we have a hemispherical surface as be
Total surface are of cone will be
Total  surface area of hemisphere
but since the base of cone hemisphere is some and total surface area will not consider any be area
Total surface area of hemisphere in this case
Total surface area = Total surface area of cone+ Hemisphere 
putting value of and

Answered By

toppr

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