Question

Find the value of x round to the nearest tenth

Answer 1

4.1 cm

Explanation:

The segment marked x bisects the chord, so the triangle shown has legs x and 7.8, and hypotenuse 8.8.

The Pythagorean theorem can be used to find x:

8.8² = x² +7.8²

x² = 8.8² -7.8² = 77.44 -60.84 = 16.60

x = √16.6

x ≈ 4.1 . . . cm