Question

What is the approximate circumference of a circle that has a center at (3,1) and passes through the point (3,6)?

Answer 1

Approximately 31.42

Explanation:

You use the Distance Formula

d= √( x2 - x1 )^2 + ( y2 - y1 )^2

substitute

r= √(3-3)^2 + (6-1)^2

√0^2 + 5^2

r = √25

r = 5

Now you can use the equation for finding the circumference

2πr

2π5

≈ 31.42