Question

The point (5,4) lies on a circle. what is the length of the radius of this circle if the center is located at (3,2)

Answer 1

Use the x and y values from your point and the h and k from the center to write the equation you need to solve for r. The general form of the equation for a circle is
`(x-h) ^(2) +(y-k) ^(2) = r^(2)`. We will fill in accordingly:
`(5-3) ^(2)+(4-2) ^(2) = r^(2)`. Solve for r to get that
`r= √(8)`