The surface areas of a sphere is 616sqm the surface areas of its hemisphere is
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Answer:
Surface area of sphere=4πr
2
By data
4πr
2
=616
4×
7
22
×r
2
=616
r
2
=
4×22
616
7
×7
r
2
=7×7
r
2
=49
r=7 cm
∴ Diameter of the sphere=2r
=2×7
=14 cm
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