Question

The length of a rectangle is twice its breadth. If its area is 72 sq m, the breadth of the rectangle is ___ m.

Answer 1

Let the breadth of the rectangle be $b$ m.
Given, the length is twice the breadth.
Hence, the length of the rectangle will be $2b$ m.

Area of rectangle = $2b\times b$
$\Rightarrow 72=2b^2$
$\Rightarrow b^2=36$
$\Rightarrow b=6$ m

The breadth of the rectangle is 6 m.