What will be the radius of a sphere whose surface area is 616 $c m^{2}$ ? (Use $π = \frac{22}{7}$ )

6

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Solution

The correct option is B $7$ cm
Radius $= \frac{1}{2} \times \sqrt{\frac{surface area}{π}}$
on solving we get radius $= 7$ cm

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π = \frac{22}{7}

Question 6
Find the radius of a sphere whose surface area is $154 c m^{2}$ .

$[A s s u m e π = \frac{22}{7}]$

616 {cm}^{2}

What is the diameter (in cm) of a sphere whose surface area is 616 $c m^{2}$ ?

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