Question

if the length of a chord which is 8 cm away from the centre is 12 cm find the radius of the circle​

Answer 1

length of chord = 12 cm

half of chord = 12/2 = 6cm

distance from center=8 cm

radius = r cm

perpendicular from center of chord to center of circle = 8 cm

using Pythagoras theorem

r^2 = 6^2 + 8^2

r^2 = 36 + 64

r^2 = 100

r = 10cm