Question

a chord of a circle is 30 cm long its distance from the centre is 18cm find the radius of the circle​

Answer 1

Answer:

H = 23.43 cm (approx.)

Step-by-step explanation:

Since, a right angle triangle forms ;

Therefore, radius will be the hypotenuse, the given distnace will be the perpendicular, and half the length of the chord will be the base.

So, According to Pythagoras Theorem ;

=> H^2 = B^2 + P^2

=> H^2 = (15^2 + 18^2) cm

=> H^2 = (225 + 324) cm

=> H = root 539 cm

=> H = 23.43 cm (approx.)

Hope it helps u !!!!!!!!