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valkas [14]
3 years ago
12

The formulae for finding the surface area of a sphere os given by A=4 pi Rsquared. calculate the radius of the sphere whose surf

ace area is 616cm2. take pi 22/7
please help me...​
Health
1 answer:
Helen [10]3 years ago
3 0

Answer: 7cm

Explanation:

The surface area of a sphere is calculated by using the formula:

A = 4πr²

Since the surface area is 616cm², using the formula given, the radius will be calculated thus:

A = 4πr²

616 = 4 × 22/7 × r²

616 = 88/7 × r²

Multiply both side by 7/88

616 × 7/88 = 88/7 × 7/88 × r²

49 = r²

r = ✓49

r = 7

The radius is 7cm

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