X = 5, y = -2
-x +3 = 2x - 12
-3x = -15
3x = 15
x = 5
y = -5+3
y=-2
R=xa+xb, r-xa=xb, b=r-xa/x
2.2367 , therefore to the nearest hundredth it would be 2.237
$32.50 would be your answer for all of those :) good luck :)
The circumference = π x the diameter of the circle (Pi multiplied by the diameter of the circle). Simply divide the circumference by π and you will have the length of the diameter. The diameter is just the radius times two, so divide the diameter by two and you will have the radius of the circle
