Question

Find the distance of a cord 8cm from the centre of a circle of a radius 5 cm​

Answer 1

d = 3 cm

Explanation:

Given that,

The distance of a cord, c = 8 cm

The radius of the circle, r = 5 cm

Half of the cord = 4 cm

We need to find the distance of a cord from the centre of the circle. We can find it using Pythagoras theorem,

`5^2=d^2+4^2\\\\d^2=25-16\\\\d=3\ cm`

So, the required distance is 3 cm.