Find the radius of a sphere whose surface area is 154 cm2. – InterviewSolution

1.

Find the radius of a sphere whose surface area is 154 cm2.

Answer»

Surface area of a sphere = 154 cm²

We know, Surface area of a sphere = 4πr²

So, 4πr² = 154

4 x \(\frac{22}{7}\) x r² = 154

r² = \(\frac{49}{4}\)

or r = \(\frac{7}{2}\)

= 3.5

Radius of a sphere is 3.5 cm.

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