Answer:
4
Step-by-step explanation:
9:8 = 4x+2:4x
36x = 32x + 16
x = 4
The answer would be A: R= C over 2 pi
Hope this helps :)
Answer:
Step-by-step explanation:
By similar triangles, you get
3/BD = BD/7
BD^2 = 21
BD = √21
Now you use Pythagoras to get x
7^2 + BD^2 = x^2
49 + 21 = x^2
60 = x^2
x = √60
7.746