the water melon of a sphere is cut into two hemisphere then what is the total surface area of each hemisphere
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Surface area of sphere=4πr
2
After cutting along the diameter, then
TSA=2πr
2
+πr
2
=3πr
2
∴TSA of 2 hemisphere=2×3πr
2
=6πr
2
Hence, TSA will be increased.
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