Question
The curved surface area of the sphere is 154
cm2 . Find the volume of the sphere (rounded off to one digit after decimal).Solution
using formula A= 4πr2 V = (4/3)πr3 ATQ- 4πr2=154 r =3.5cm volume of sphere= (4/3)πr3 4/3 ×22/7×3.5×3.5×3.5 =3793/21 =179.66
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