Two cubes have their volumes in the ratio 8:125. what is the ratio of their surface areas?
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the ratio is 12:75
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Let the sides of the cubes be a1 and a2
Ratio of their volumes = (a1/a2)^3
=(8/125)
=(2/5)^3
a1/a2 = 2/5-------(1)
Ratio of surface areas =(a1/a2)^2
=(2/5)^2
=(4/25)
=4:25
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