The diameter of a sphere is decreased by 50%. What is the ratio between initial and final curved surface areas?
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Step-by-step explanation:
C's of the. Sphere=4πr^2
New radius=r/4
New C's=4π(r/4)^2=πr^2/4
Ratio=original/new=4πr^2/πr^2/4=16/1
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