The center of a circle is at (9, -6) and a point on the circle is (6, -10). What is the circumference of the circle?
Options
A
B
C
D
Answer & Analysis
Answer
A
Analysis
Question Analysis
This question focuses on circles. The main task is to find the circumference of the circle. First, we need to calculate the radius by determining the distance between the center and the point on the circle, then use the formula for the circumference of a circle.
Key Concept Explanation
The radius of a circle is the distance from the center to a point on the circle, calculated by . The circumference formula of a circle is .
Step - by - Step Solution
1. Calculate the radius:
Let and .
Calculate
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