Points a and b lie on a circle centered at point o. if length of ab/radius= π/10, what is the ratio of the area of sector aob to the area of the circle?

a. 1/10

b. π/10

c. 1/20

d. π/20

C. \frac{1}{20}

Step-by-step explanation:

Given: Points A and B lie on a circle centered at point O.

We know that the angle of sector is given by :-

, where l is the length of sector and r is the radius of sector.

Thus,

The area of sector is given by :-

Now, the ratio of the area of sector AOB to the area of the circle is given by :-

answer: the anser is 3

step-by-step explanation:

c- 2o is equal to 9