The volume of two spheres are in the ratio 64:47. Find the ratio of their total surface area.
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V1:V2=4/3*pi*r^3:4/3*pi*r^3
64/27=R^3/r^3
(4/3)^3=(R/r)^3
therefore R=4 and r=3
A1:A2=pi*R^2:pi*r^2
(pi*16)/(pi*9)
16:9
therefore the ratio of these surface area is 16:9
64/27=R^3/r^3
(4/3)^3=(R/r)^3
therefore R=4 and r=3
A1:A2=pi*R^2:pi*r^2
(pi*16)/(pi*9)
16:9
therefore the ratio of these surface area is 16:9
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