Question

The width of a rectangle is 45% of its length. The length of the rectangle is 16 inches.

There are approximately 12.7 centimetres in 5 inches.

What is the approximate width of the rectangle in centimetres?

Answer 1

width ≈ 18.3 cm

Explanation:

width = 45% of length

= ×
`(45)/(100)` × 16

= 0.45 × 16

= 7.2 inches

Using the given conversion with x being the width in cm

`(5)/(12.7)` =
`(7.2)/(x)` ( cross- multiply )

5x = 91.44 ( divide both sides by 5 )

x = 18.288

width ≈ 18.3 cm ( to 1 dec. place )