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Question
Find the edge of a cube whose surface area is 432 m2.
Solution
Let,
a → Edge of the cube
Surface area of the cube = 6a2
So,
`6a^2 = 432`
`a^2 = 432/6`
= 72
` a = 6 sqrt(2) ` m
Side of the cube is `6 sqrt(2) ` m .
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