Question

If these two shapes are similar, what is the measure of the missing length b?​

Answer 1

b = 90 in

Explanation:

given the two shapes are similar, then the ratios of corresponding sides are in proportion , that is

`(b)/(72)` =
`(60)/(48)` =
`(5)/(4)` ( cross- multiply )

4b = 72 × 5 = 360 ( divide both sides by 4 )

`(4)/(4)` b =
`(360)/(4)` , that is

b = 90 in