Question

total surface area of cubical is 294cm2.Find the length of its edge

Answer 1

Your answer mate ^_^

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$Total \:surface \:area \:of \:cube = 6{a}^{2} \\ \\ 6{a}^{2} = 294 \\ \\ {a}^{2} = \frac{294}{6} \\ \\ {a}^{2} = 49 \\ \\ a = \sqrt{49} \\ \\ a = 7$

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Answer 2

total surface area of cube = 294
6 a^2 = 294
a^2 = 49
a = √49
a = 7

so edge of cube is 7 cm