Question

The center and a point on a circle are given. Find the circumference to the nearest tenth.

center:(−15, −21);
point on the circle: (0, −13)

The circumference is about ?

Answer 1

Circumference ~ 106.8

Explanation:

Use the distance formula to find the radius of the circle with the two coordinates given. The radius of this circle is 17. Plug 17 into the formula 2(pi)r to find the Circumference. The answer is 106.8 rounded to the nearest tenth.