Question

What is the radius of a circle whose equation is (x + 5)^2 + (y – 3)^2 = 42?

1. 2 units
2. 4 units
3 .8 units
4. 16 units

Answer 1

the equation of a circle centered at point (x1,y1) with a radius r is given by

$(x-x_1)^2 + (y-y_1)^2 = r^2$

are you sure you wrote down the problem correctly?

Answer 2

Answer:

4 units

Step-by-step explanation: