Geometry

Question Analysis

The main focus is on determining the circumference of the given circle. We first need to find the radius by identifying the center of the circle and a point on its circumference. Then, we use the formula  (where  is the circumference and  is the radius) to calculate the circumference.

 

Key Concept Explanation

The circumference  of a circle is calculated using the formula , where  is the radius of the circle. The radius is the distance from the center of the circle to any point on its circumference.

 

Step - by - Step Solution

1. Identify the center and a point on the circumference:

Assume the center of the circle is at  (by observing the graph). Let's take a point on the circumference, say .

2. Calculate the radius:

Since the  - coordinates of the center  and the point  are the same, we can find the radius by calculating the difference in