Question

The lengths of sides of a rectangle are $5cm$ and $3.5cm$. Find the ratio of its perimeter to area.

Answer 1

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

$=2(5+3.5)$

$=17cm$

Area of rectangle $=l\times b$

$=5\times 3.5$

$=17.5c{m}^2$

Ratio of perimeter to area $=\frac{17}{17.5}=\frac{34}{35}$

Ratio is $34:35$