Question

Carlos plots a circular planter's wall on a computer. He determines that the circle that defines the part of the planter wall that gets watered by the sprinkler is
(x − 10)^2 + (y + 12)^2 = 36.

What is the diameter, in meters, of the circular area that gets watered by the sprinkler?


36 m

12 m

6 m

3 m

Answer 1

The equation is (x−10)^2+(y+12)^2=36, so the radius is sqrt(36)=6 m. The diameter is 2·6 = 12 m.