Question

The length of a rectangle is twice of its breadth. If its perimeter is $60cm$, find its length.

Answer 1

Given
The perimeter of the rectangular $=60cm$
Length of rectangular is twice of its breadth
Let us consider the breadth of the field $=x$
Hence, length of the field $=2x$
Perimetre $=2(length+breadth)$
Perimeter $=2(2x+x)$
$60=2\times 3x$
$60=2\times 3x$
$60=6x$
$x=60/6$
We get,
$x=10cm$
So, the breadth of the rectangle $=10cm$
Then the length of the rectangle $=2x$
$2\times 10$
$=2\times 10$
$=20cm$
Therefore, the length of the rectangular is $20cm$