Question

What is the perimeter of a square garden if its length is 20 metres

Answer 1

Step-by-step explanation:

perimeter= 4a=4×20 = 80 metres

Answer 2

l=20m,b=? perimeter =2(l+b) =2(20+b) =40+2b and 40=2b and b= 20m.              Putting value of b in 2(l+b) we get.             2(20+20)=2×40=80m