Question

The ratio of the length to breadth of a rectangle is 11 : 9. If the perimeter of the rectangle is 240 cm , find the length of the rectangle

• A. 110 cm
• B. 90 cm
• C. 11 cm
• D. 9 cm

Answer 1

The correct option is A

110 cm

Let the length and the breadth of the rectangle be 11$x$ and 9 $x$ respectively

Perimeter of the rectangle = $2(l+b)$

Perimeter of the rectangle = 240 cm

$\therefore$ $2(11x+9x)$ = 240 cm

$20x$ = 120

$x$ = 10

Hence the length of the rectangle =$11\times 10$ = 110 cm