the radius of a sphere is 7 cm the its curved surface area.
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461.81 is the c.s.a of hemisphere or sphere
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Radius of the Sphere (r)=7cm
Curved surface area (A)=4πr²
=4×(22/7)×7²
=(4×22×7×7)/7
After cancellation,we get
=4×22×7
=616cm²
Therefore,
Curved surface area of the
Sphere=616cm²
••••
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