Question

The perimeter of a rectangle is 13 cm and its width is 2$\frac{3}{4}$. Find its length

Answer 1

Assume the length of the rectangle to be x cm.

The perimeter of the rectangle = 2 x (length + width)


$2\times (x+2\frac{3}{4})$

$2\times (x+\frac{11}{4})=13$

$x+\frac{11}{4}=\frac{13}{2}$

$x=\frac{13}{2}-\frac{11}{4}$

$x=\frac{15}{4}=3\frac{3}{4}$

The length of the rectangle is $3\frac{3}{4}$ cm