Question

The length of rectangle is half its breadth if area of rectangle is 120 find its length,breadth and perimeter.

Answer 1

$b = \frac{l}{2}$
$l \times \frac{l}{2} = 120 \\ {l}^{2} = 240$
$l = \sqrt{240 } = 15.5 \\ b = \frac{15.52}{2} = 7.76$ where b is length and b is length

Answer 2

hope it's helpful to you. . . .