Length of chord MN is 40 cm. Distance of chord MN from the centre is 15 cm. What will be the radius of this circle?
Answer & explanation
Correct answer: option 4
We have ,
OP = 15cm
MN = 40cm
MP = \(\frac{40}{2}\) = 20 cm
Now,
H2 = B2 + P2
(MO)2 = 202 + 152
= (MO)2 = 400 + 225
= (MO)2 = 625
MO = Radius = 25 cm