Mensuration Practice Test 7

Let the breadth of the rectangle = x
Length of the rectangle = 2x
Perimeter = 2 (2x + x) = 360
2 (3x) = 360
6x = 360
x = $\frac{360}{6}$ = 60
Breadth = x = 60 cm.
Length = 2 × 60 = 120 cm.
Area of rectangle = l × b
= 120 × 60
= 7,200 $\mathit{c}{\mathit{m}}^2$