Question

Q 20. The perimeter of a rectangle is 84 m. If one side of the rectangle is
20 m.What is its area? ​

Answer 1

Step-by-step explanation:

perimeter = 84m

1 side = 20 m

let 1 side be length and let breadth b( b)

perimeter of rectangle = 2(l + b)

● 84 = 2(20+b)

● 84 = 40 +2b

● 2b = 84-40

● 2b=44m

● b= 44÷2

● b = 22 m^2

hope it helps