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Earn +20 ptsQ: Why is the surface area of a sphere is 4πr squared?
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What is the volume of a sphere with a surface area of 452.39cm2?
Surface area of sphere = 4r 4 xπ x r2 = 452.39 cm2 r2 = 452.39/(4) = 36.01831210191 cm2 r = sqrt(36.01831210191) = 6 cm(approximately) And volume is given by V = 4πr3 = 4 x π x 63/3 cm3 = 905.46912199289 cm3
What is 4r-48?
4r-48 = -44
How do you get -2 equals 4r plus s solving for s?
s = -2 -4r
How to solve 10 plus 4r 30?
If you mean: 10+4r = 30 then it works out that r = 5
What is -4r-9 plus r?
-13
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