SOLUTION: The volumes of two spheres are in the ratio 64:27 Find the difference of their surface areas, if the sum of their radii is 7 units?
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Question 253744: The volumes of two spheres are in the ratio 64:27 Find the difference of their surface areas, if the sum of their radii is 7 units?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
r= one radius
R=other radius
v=one volume
V=other volume
r+R=7
and and and
r = 4 units
R = 3 units
,
v=268.083 cubic units, V=113.097 cubic units
surface area=
=====87.96 square units
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