Question

find the total surface area of a cube whose diagonal is 7√3​

Answer 1

if side of the cube is a

then it's diagonal is, d=a√3

since, d=7√3=a√3

we get side of the cube, a=7

and Total surface area of cube is given by

$6 {a}^{2}$

hence, TSA of cube = 294

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