Answer:
x = 4.1 cm
Step-by-step explanation:
The long leg of the right triangle is half the chord length, so is ...
15.6 cm/2 = 7.8 cm
Then the leg marked x can be found from the Pythagorean theorem.
x^2 +7.8^2 = 8.8^2
x = √(77.44 -60.84) = √16.6 ≈ 4.1
x is about 4.1 cm.
