Question

The perimeter of a rectangular metal plate is 36 dm and its area is 80
dm2. Find its dimensions. (Relate the measures to the sum and product of a
quadratic equation.)​

Answer 1

Answer:

area of rectangle is 2(l+b)

let length be 36

80=2(36+b)

80=72+2b

80-72=2b

8=2b

b=4