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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? |
42 cm 32 cm 30 cm 25 cm |
25 cm |
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 |
