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A semicircle of radius 17.5 cm is ratiat...

A semicircle of radius 17.5 cm is ratiatied about its diameter. Find the curved surface of so generated solid

Text Solution

Verified by Experts

The correct Answer is:
136`cm^(3)`
The solid generated by a circle ratated about its diameter is a sphere
Now radius of sphere r=17.5 cm
and its curved surface =`4pir^(2)=4xx(22)/(7)xx17.5xx17.5=3850 cm^(2)`
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