Question

Express the diameter of the circle (d) in terms of its radius (r)​

Answer 1

Answer:

Since C is center of circle, CA,CB,CP are radius.

∴CA=CB=CP=r

Now,AB is diameter of circle.

AB=AC+BC

d=r+r=2r

Answer 2

Answer:

(In the adjoining figure, AB is the diameter of the circle; C is its centre). Express the diameter of the circle (d) in terms of its radius (r). ... Hence, the relation between d and r is d = 2r