Question

A chord of circle is of length 6 cm and it is at a distance of 4th from centre find radius of circle

Answer 1

Answer: 5cm

Step-by-step explanation:

On inspection: half the chord, the distance line segment, and the radius should form a 3–4–5 right triangle, making the radius 5 cm.

Answer 2

Radius of circle if the chord and the distance is given :-


radius² = (chord/2)² + distance²


so radius² = (6/2)² + 4²

=> radius² = 3² + 4²

= radius² = 9 + 16

= radius² = 25

so radius = √25

= radius = 5 cm


Answer is 5 cm