Question

What is y in this equation?

Answer 1

y = 15.4

Explanation:

the outer and inner triangles are similar then the ratios of corresponding sides are in proportion, that is

`(y)/(11)` =
`(8+3.2)/(8)` =
`(11.2)/(8)` ( cross- multiply )

8y = 11 × 11.2 = 123.2 ( divide both sides by 8 )

y = 15.4