Find the volume of sphere whose surface area is 154cm².
Total surface area of sphere = 4πr²
Volume of sphere = 4/3*π*r³
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Total surface area of sphere = 4×22/7/r×r
154×7/22×4 = r^2
1078/88=r^2
12.25 = r^2
r = 3.5
Volume of sphere = 4/3×22/7×r×r×r
= 4/3×22/7×3.5×3.5×3.5
= 4/3× 22×0.5×3.5×3.5
= 88/3 × 6.126
= 539/3 or 179.66
Hope it helps
154×7/22×4 = r^2
1078/88=r^2
12.25 = r^2
r = 3.5
Volume of sphere = 4/3×22/7×r×r×r
= 4/3×22/7×3.5×3.5×3.5
= 4/3× 22×0.5×3.5×3.5
= 88/3 × 6.126
= 539/3 or 179.66
Hope it helps
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