Question

question 7 of 10
if the blue radius below is perpendicular to the green chord and the segment
ab is 8.5 units long, what is the length of the chord?
a. 34 units
b. 17 units
c. 8.5 units
d. 4.25 units

Explanation:

Step1: Recall circle - chord property

A radius perpendicular to a chord bisects the chord.

Step2: Calculate chord length

If the radius bisects chord $AC$ at point $B$ and $AB = 8.5$ units, then $AC=2\times AB$.
So, $AC = 2\times8.5=17$ units.

Answer:

B. 17 units