Can someone please help me on circumference of circles?
I will say more questions below btw as there's more I am confused about.
Only up to 10 questions will give brainlist to the person who helps the most. :)

do you have the measurements?

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36

do you have answer choices so i can you