Question

If length of side of a chess board is smaller than its perimeter by 21 cm then find length of side of a chess board.

PLEASE ANSWER AS FAST AS PODSIBLE...​

Answer 1

Answer:

7cm

Step-by-step explanation:

Since chess board is of square shape, let the length of a side be a

Then given that a=4a-21

So 3a=21

a=7 cm

Answer 2

Answer:

here's your solution

u hadn't given any value of parameter.

just divide the value of parameter by 21 .

u will get the Answer