Question

What is the value of y ?

Answer 1

6

Explanation:

Chords within a circle are proportional. Proportional means that they form equal ratios. To solve for y, set up a proportion.

The ratios we will create will be
`(long)/(short) =(long)/(short)` where each long and short form an angle.

So write:

`(12)/(8) =(y)/(4)`

To solve, cross multiply numerator with denominator.

12(4) = 8(y)

48=8y

6=y