Question

what is total surface area of cube having 3cm of its length​

Answer 1

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Step-by-step explanation:

(a) We know that the length of the edge of the cube is 3cm. Substituting a=3 in the formula 6a2, total surface area of the cube =6(3)2=54cm2. Hence, the total surface area of the cube is 54cm2 when the length of the edge is 3cm.

Answer 2

$total \: surface \: area \: of \: cube \: = 6a² \\ = 6 \times 9 \\ =54cm²$

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