Find the volume of a sphere whose surface area is 154 cm 2 .
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4Πr^2=154
r^2=154×7/4×22
r=√49/4
r=7/2cm
4/3Πr^3
4/3×22/7×(7/2)^3
88/21×343/8
=179.6cm^3
It is the right answer
r^2=154×7/4×22
r=√49/4
r=7/2cm
4/3Πr^3
4/3×22/7×(7/2)^3
88/21×343/8
=179.6cm^3
It is the right answer
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