Find the Circle Through (3,3) with Center (2,7) (2,7) , (3,3)

$(2, 7)$ , $(3, 3)$

Step 1

Find the radius $r$ for the circle. The radius is any line segment from the center of the circle to any point on its circumference. In this case, $r$ is the distance between $(2, 7)$ and $(3, 3)$ .

Use the distance formula to determine the distance between the two points.

$Distance = \sqrt{{(x_{2} - x_{1})}^{2} + {(y_{2} - y_{1})}^{2}}$

Substitute the actual values of the points into the distance formula.

$r = \sqrt{{(3 - 2)}^{2} + {(3 - 7)}^{2}}$

Simplify.

Subtract $2$ from $3$ .

$r = \sqrt{1^{2} + {(3 - 7)}^{2}}$

One to any power is one.

$r = \sqrt{1 + {(3 - 7)}^{2}}$

Subtract $7$ from $3$ .

$r = \sqrt{1 + {(- 4)}^{2}}$

Raise $- 4$ to the power of $2$ .

$r = \sqrt{1 + 16}$

Add $1$ and $16$ .

$r = \sqrt{17}$

Step 2

${(x - h)}^{2} + {(y - k)}^{2} = r^{2}$ is the equation form for a circle with $r$ radius and $(h, k)$ as the center point. In this case, $r = \sqrt{17}$ and the center point is $(2, 7)$ . The equation for the circle is ${(x - (2))}^{2} + {(y - (7))}^{2} = {(\sqrt{17})}^{2}$ .

${(x - (2))}^{2} + {(y - (7))}^{2} = {(\sqrt{17})}^{2}$

Step 3

The circle equation is ${(x - 2)}^{2} + {(y - 7)}^{2} = 17$ .

${(x - 2)}^{2} + {(y - 7)}^{2} = 17$

Step 4

Find the Circle Through (3,3) with Center (2,7) (2,7) , (3,3)

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