Question

The surface area of a cube whose edge equals to 3cm is​

Answer 1

Answer:

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

$\huge{\mathcal{\purple{A}\green{N}\pink{S}\blue{W}\purple{E}\green{R}\pink{!}}}$

We know that the length of the edge of the cube is 3cm.

Substituting,

a=3 in the formula 6a×a

Total surface area of the cube =(6×3×3)sq. cm.

=54 sq. cm.

Hence, the total surface area of the cube is 54 sq. cm. when the length of the edge is 3cm.

$\huge\underline\mathtt\colorbox{cyan}{54 sq. cm.}$