Answers

2016-02-18T21:47:04+05:30
Surface area of sphere =4TTr²
which is equal to 5544 cm
∴4TTr²=5544 cm
4×22/7×r²=5544 cm
by calculation
r²=5544×7/22×4
r²126×7/2
r²=882/2
r²=441
r=√441
r=21
diameter(d)=2r
d=2×21
d=42cm ans
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