Question

find the cost of fencing a square Park of side 250 m at the rate of Rs. 20 per metre.

Answer 1

we know that in square all sides are equal

so

one side =250m

therefore area = s*s

area = 25*25=62500

cost = 62500*20=1250000 answer

Answer 2

square have 4 equal sides and each side is of 250m then its perimeter will be (4×250)m=1000m
Now the rate is rs.20/m and we are having 1000m that's why we shall multiply 20 by 1000 so we can get the amount of fencing the square park.
20×1000=20000rs.