Question

The figures are similar. find x. the ratio of the perimeters is 5:7​

Answer 1

x = 16.8

Explanation:

The ratio of corresponding sides is equivalent to the ratio of the perimeters.

Then using proportion

`(12)/(x)` =
`(5)/(7)` ( cross- multiply )

5x = 84 ( divide both sides by 5 )

x = 16.8