Question

The length of a field is 3 times of its breadth. If its perimeter is 400 metres, find its
area.

​

Answer 1

Answer:

Perimeter = 2 (l + b)

» 400 = 2 (4b)

» b = 50

Therefore,

Area = lb

= 3b (b)

= 3b²

= 3 (50)²

= 3 (2500)

= 7500 m²

Answer 2

Answer:

the length of a field is 3 times of its breadth.If its perimeter is 400 meters ,its area is 7500

Step-by-step explanation:

Perimeter=2(l+b)

400=2(4b)

b=50

therefore,

area=lb

=3b(b)

=3b ki power 2

=3(50)ki power 2

3(2500)

=7500 m ki power 2