Question

The lengths of sides of a rectangle are 7cm and 3.5 cm. Find the ratio of its perimeter to area.​

Answer 1

Answer:

The ratio of the perimeter to the area of the rectangle = 21 : 24.5 = 6:7

Step-by-step explanation:

The length of the side of the rectangle = 7 cm

The breadth of the rectangle = 3.5 cm

The area of the rectangle = length × breadth

    The area of the rectangle = 7 × 3.5 = 24.5 square cm

The perimeter of the rectangle = 2 × (length + breadth)

    The perimeter of the rectangle = 2 × (7 + 3.5) = 21 cm

The ratio of the perimeter to the area of the rectangle = 21 : 24.5 = 6:7

Answer 2

Given::

The lengths of sides of a rectangle are 7cm and 3.5 cm. Find the ratio of its perimeter to area.

Answer::

$\sf\color{red}{3.5cm}\boxed{\begin{array}{c}</p><p> \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \\ \: \: \: \: \: \: \: \: </p><p>\end{array}} \\ \: \: \: \: \: \: \: \: \: \sf\color{red}{7cm}$

Perimeter :

$\mathtt{2(l + b)}$

$\mathtt{2(3.5 + 7)}$

$\mathtt{2 × 10.5}$

$\mathtt{= 21 cm}$

Area :

$\mathtt{l \: \times b}$

$\mathtt{3.5 \times 7}$

$= \mathtt{24.5cm}$

Ratio :

$\mathtt{21∶24.5 \: ans}$

Hope it helps