A circle has a radius of 15 cm. If a chord 24 cm long is drawn, what is the perpendicular distance from the center of the circle to the chord?
Show answer & explanation
Correct answer: A
Explanation
radius = 15 cm
chord = 24 cm
According to the formula:
d = √(r² − (l/2)²)
d = √(15² − 12²)
= √(225 − 144)
= √81
= 9 cm