Question

if the length of a chord of a circle is 8 cm and the distance of 7cm from the centre of the circle then the radius of the circle
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Answer 1

Answer:

OD=3 cm

AB=8 cm

Radius =OB

In △OBD

OB

2

=BD

2

+OD

2

⟹OB

2

=4

2

+3

2

⟹OB=5 cm

Radius=5 cm

Answer 2

REFER TO ATTACHMENT FOR BETTER UNDERSTANDING

The chord of 7cm divides chord CD to half of its actual length.

Therefore CB = 4cm

$\bf\underline{\underline{Final \ answer = 8.0622cm \ radius }}$