Question

A square carrom board has a perimeter of 320 cm. How much is its area?

Answer 1

As the carrom board is square, so length of all its sides will be equal.
Side = AB = BC = CD = AD
Therefore, its perimeter = sum of all its sides
= 320 cm

Now, all the 4 sides are equal, so we divide 320 by 4.
Thus, length of each side = $\frac{320}{4}$ cm
= 80 cm

Now, area of a square carrom board = side $\times$ side
= 80 cm $\times$ 80 cm
= 6400 square cm