Question

what is C. S. A of cube?

Answer 1

let the side of the cube = a units

csa = 4a² squre units
tsa = 6a² square units

Answer 2

The curved surface area of a cone is the area of the four square except the upper and the lower surface
so the CSA will be the sum of all the four squares ...
this area of a square = a² when the side is a
thus CSA will be 4a²

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