Question

In the circle, AB = 42, BC = 18, and CD = 4.

Answer 1

We need to know where the lines are within the circle, could you upload an image?

Answer 2

applying this logic to your problem we have:

CD(x + CD) = BC(BC + AB)

can you try plugging in the appropriate values and solving for x? I am willing to help out if you get stuck ~

Answer 3

4(4+x) = (18)(18+42)

x = ?

Answer 4

hm.

distributing and multiplying gives us

16 + 4x = 1080

x = ?

Answer 5

good so 266 is your solution