Question

The perimeter of a 10 m long rectangle is 36 m. find its area

Answer 1

Answer:

first we need to find the breadth.

2 (10 + b) = 36

20+2b=36

2b = 16

b = 8.

Area = lb sq.units

          10 * 8 = 80cm^2.

Answer 2

Answer:

length=10m

let the breadth of the rectangle be x meters.

perimeter=36m

perimeter=2(length+breadth)

2*10+2x=36

20+2x=36

2x=36-20

2x=16

x=16/2=8

x=8m

so the breadth of the rectangle = x=8m

so area(A) of a rectangle=Length*breadth

A=10*8

A=80

therefore,area of the rectangle=A=80m²

Step-by-step explanation:

hope it helps!