Question

The area of a square is 400 square units. If the length of each side of the

square increased by one unit, would its area be a rational number? Explain.

Answer 1

yes it will be a rational number.

square having area 400 sq units will have a length of 20 on each side by increasing the length of each side by 1 we get 21 then the area will be

21 ^ 2=441

Then we will have a rational number.