Question

Find the missing side

Answer 1

x = 5

Explanation:

Since the figures are similar then the ratio of corresponding sides are equal, that is

`(3)/(12)` =
`(x)/(20)` ( cross- multiply )

12x = 60 ( divide both sides by 12 )

x = 5

Answer 2

`12 / 3 = 4`

so

`x = 20 / 4`

x = 5