SSC CHSL Model Paper 18

Question : 72 of 100

Marks: +1, -0

A chord of length 30 cm is at a distance of 8 cm from the centre of a circle. Find the radius of the circle

Solution:

OP^2 = OR^2 + PR^2

OP^2 = (15)^2 + (8)^2

= 2 25 + 64 = 289

OP = radius of circle = 17 cm

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