Question

the radius of a sphere is daoubled. the percentage of increase in a surface area​

Answer 1

Answer:

THE DOUBLED RADIUS OF THE SPHERE = 2r. DOUBLED RADIUS SURFACE AREA = 4π(2r)² = 16πr² . INCREASE % IN AREA = 16πr²-4πr²/4πr² × 100 = 12/4 × 100 = 300%

Step-by-step explanation:

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Answer 2

Answer:

THE DOUBLED RADIUS OF THE SPHERE = 2r. DOUBLED RADIUS SURFACE AREA = 4π(2r)² = 16πr² . INCREASE % IN AREA = 16πr²-4πr²/4πr² × 100 = 12/4 × 100 = 300% .

Step-by-step explanation:

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