Question 721154
vol of sphere = 4/3 pir^3

surface area = 4 pir^2
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4/3 pi r^3= N pi

N= 4/3 r^3
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N pi = 4 pi r^2
N= 4r^2 
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equate both

4r^2=4/3 r^3

r=3

N= 4r^2    
N= 4*3*3

N=36