Question

the breadth of a rectangle is one third of its length and the perimeter of the rectangle is 80cm what is its area

Answer 1

The length and breadth of rectangle are 30 cm and 10 cm

Step-by-step explanation:

Let the length of rectangle be x

We are given that the breadth of a rectangle is one-third of its length

So, Breadth =

$\frac{1}{3}x$

3

1

x

Perimeter of rectangle = 2(l+b)=

$2(x+\frac{x}{3})2(l+b)=2(x+ </p><p>3</p><p>x</p><p> </p><p> )$

We are given that the perimeter is 80 cm

So,2

$(x+\frac{x}{3})=802(x+ </p><p>3</p><p>x )=80$

$2x+\frac{2x}{3}=802x+ </p><p>3</p><p>2x$

=80

x=30

Breadth =

$\frac{1}{3}x=\frac{30}{3}=10$

3

1

x=

3

30

=10

Hence The length and breadth of rectangle are 30 cm and 10 cm

Answer 2

Answer:

Ans : So, the Length is = 30cm.

And

The breadth is = 10cm

And

Area of rectangle is = 300cm^2.

Hope it is helpful for you....