the volume of the sphere are in the ratio 64 ratio 27 find the ratio of their surface areas
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Answer:ratio of their surface area is 16:9
Step-by-step explanation:
Volume of sphere1 : volume of sphere2=64:27
=>64:27=4/3πrcube : 4/3πRcube
=>64:27=r cube: R cube
=>r:R=4:3
Surface area of sphere1: surface area if sphere2=4πr square: 4πR square
=r square:R square
=4 square : 3 square
=16:9
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