What is the area for a square of side $5cm$?

We are given the length of the square's side as $5cm$ in the problem,

Now, We know that the area of the square is found by the following expression:

$Area=side\times side$

Substituting the given value in the expression of area, we get:

$Area=5cm\times 5cm$

Simplifying which, we get:

$Area=25c{m}^2$

Thus, the area of the given square is found to be $25c{m}^2$, i.e. option (B) is right answer.