fin the radius of a sphere whose surface area is 154^2 cm
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use the formulae 4πrsq
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Surface Area of a sphere = 4 * pi * r^2
154 = 2 * 22/7 * radius^2
Radius ^2 = 49/2
Radius = 7/root2
On rationalizing,
Radius = 7*root 2 / 2
Radius = 3.5 * root 2.
154 = 2 * 22/7 * radius^2
Radius ^2 = 49/2
Radius = 7/root2
On rationalizing,
Radius = 7*root 2 / 2
Radius = 3.5 * root 2.
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