SOLUTION: 4πrē in this why we use 4 and π ? And also we use1/3, 3/4 in other formula why we can not use the any think like 5/4, 8/3

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Question 767659: 4πrē in this why we use 4 and π ? And also we use1/3, 3/4 in other formula why we can not use the any think like 5/4, 8/3
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
4πrē in this why we use 4 and π ? And also we use1/3, 3/4 in other formula why we can not use the any think like 5/4, 8/3
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It's not clear what you're asking.
We do use 5/4 & 8/3 when appropriate.
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In the case of 4pi*r^2, that's the surface area of a sphere of radius r.
We use 4pi%2Ar%5E2 because that's what it is.