Question

a chord of a length 30 cm is drawn at a distance of 8 cm from the centre of acircle .find out the radius of circle​

Answer 1

Length of radius is sq root of (chord/2)2 + distance 2

Which is √15^2 + 8^2

= 17

Answer is 17 cm

Answer 2

we know that a line drawn from center to chord perpendicular to the chord

so,half of chord is 15cm than join center to both end of the chord.

By the Pythagoras theorem find it.

answer will 17