Question

The perimeter of the field is 320 m. If the length of a rectangular field is thrice its breadth, then find the area.

1200 m21200 m2

3600 m23600 m2

2400 m22400 m2

4800 m24800 m2

Answer 1

Answer:

Breadth =x

Length =3x

Perimeter =2(length+breadth)

Perimeter ⇒2(x+3x)=400

⇒2(4x)=400

⇒x=50

Length =3x=150m

Breadth =x=50m

ANSWER– 4800

Answer 2

Answer:

4800m2

Explanation:

Let breadth be x length is 3x

2(x+3x)=320

x= 40

3x= 120

So, L×B= Area

40×120= 4800sqmt