Question

Need geometry answer

Answer 1

x = 4.1 cm

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.