Question

Radius of a circle is 5 cm, the length of a circle us 8 cm. Find the distance of the centre.

Please help me ​

Answer 1

Radius of circle (r) = 5 cm

AB = 8 cm

OM ⊥AB

AM = MB = 4 cm [ ⊥drawn from the centre of the circle bisects the chord]

In right △OMA, by Pythagoras theorem

➽OA2 = OM2 + AM2

➽52 = OM2 + (4)2

➽25 = OM2 + 16

➽OM2 = 9

➽OM = 3 cm

Hope it helps ☃

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