Question

In a figure ab and cd are two chords of a circle with centre o such that c, d are collinear and if ab is equal to 3 cm then what is the radius of the circle​

Answer 1

Radius = 4.5 cm ab and cd are two chords of a circle with centre o such that c, d are collinear  ab = 3 cm  & ab = (1/3)CD

Step-by-step explanation:

AB = CD/3

C O D are colinear

O is center of circle

=> CD is Diameter

=> CD = 2 * Radius

AB = CD/3

=> AB = 2 * Radius /3

AB = 3 cm

=> 2 * Radius /3 = 3

=> 2 * Radius = 9

=> Radius = 4.5 cm

Radius of circle = 4.5 cm

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Answer 2

Answer:

............ thanks for the answer...............