milksop3 milksop3

31-05-2017
Mathematics

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what is the surface area of sphere with diameter 23ft

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jormill2 jormill2

31-05-2017

As=4pir r ^2 r= radius

answer 615.75 sq un

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31-05-2017

SA(sphere) = 4 * pi * r^2
SA = 4 * pi * (23/2)^2
SA = 1661.1 ft^2

23/2 represents the radius. R = D/2

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