Question

Heres the picture:
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Possible Answers:
12.2
13.2
14.2
15.2

Directions:
Find the value of each variable using the given chord, secant, and tangent lengths. If the answer is not a whole number, round to the nearest tenth.

Answer 1

Theorem: If two secant segments are drawn to a circle from the same external point, the product of the length of one secant segment and its external part is equal to the product of the length of the other secant segment and its external part.

Answer 2

thats really confusing

Answer 3

Forget the words to the theorem.
Look at the drawing. OB * OA = OD * OC
Use this to solve the problem.

Answer 4

so 20+11 * 20 = 13c* 13

Answer 5

(20+11) * 11 = (13 + c) * 13

Answer 6

13.2

Answer 7

yes.

Answer 8

ty