Question

find side of the cube whose surface area is 432m^2.

Answer 1

Solution :

Let the side of the cube = a m

Surface area of the cube = 432 m²

=> 6a² = 432 m²

=> a² = 432/6

=> a² = 72

=> a = √72

=> a = √( 6 × 6 × 2 )

=> a = 6√2 m

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Answer 2

Surface area of cube =6l^2=432
l^2=432/6=72
l=√72=8.49