what is the circumfrence and area of a circle that the center is (-1,0) and passes through (-3,0)
The distance from (-1,0) to (-3, 0) = the radius = 2 units
Circumference = 2pi * r = 2pi *2 = 4pi ≈ 12.56 units
Area = pi * (2)^2 = 4pi ≈ 12.56 units^2