A chord of length 8 cm is 3 cm from the center. Find the radius.
Show answer & explanation
Correct answer: A
Explanation
Given:
Length of chord = 8 cm
Distance from the center = 3 cm
Formula:
r² = d² + (l/2)²
l/2 = 8/2 = 4
r² = 3² + 4²
= 9 + 16
= 25
r = 5 cm