( support material ch-13)
The valume of the two spheres are in the ratio 64:27. find the ratio of their surface area?
The valume of the two spheres are in the ratio 64:27. find the ratio of their surface area?
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Answer:
4/3 pie r^3/ 4/ pie r'^3 = 64/27
r/ r' = 4/3
surface area 4 pie r^2
4 pie r^2/ 4 pie r'^2 = 16/9
ratio 16:9
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final answer is 16 : 9