Question

If the perimeter of rectangular field is 100m. And length is 30m. find its area.​

Answer 1

area = 600m^2

Step-by-step explanation:

p=100m

l=30m

b=x (let)

p=2(l+b)

100=2(30+x)

50=30+x

x=20

area = l*b

=30*20

=600m^2

Answer 2

Answer:

Perimeter= 100m

Length = 30m

Perimeter of rectangle = 2(l+b) = 2l+2b

Perimeter = 2(30) + 2b = 100m

Perimeter = 60 + 2b = 100m

Perimeter= 2b = 100-60 = 40

Breadth = 40÷2 = 20m

Area of rectangle = lb = 30×20 = 600 sq.m

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