Geometry B 7.7 Equation of a Circle

What is the radius of the circle?

• 2

• 4

• 1

• 3

What is the equation of the circle?

• (x - 2)² + (y - 1)² = 2²

• (x + 2)² + (y + 1)² = 4²

• (x + 2)² + (y - 1)² = 2

• (x +2)² + (y + 1)² = 4²

What is the radius of the circle?

• 3

• 6

• 1

• 4

What is the equation of the circle?

• (x + 5)² + (y +1)² = 3²

• (x - 5)² + (y - 1)² = 3³

• (x - 5)² + (y +1)² = 3

• (x - 5)² + (y - 1)² = 3²

What is the equation of a circle with this information?

• (x - 3)² + (y - 1)² = 6.5²

• (x + 3)² + (y - 1)² = 13²

• (x - 3)² + (y + 1)² = 6.5³

• (x + 3)² + (y + 1)² = 6.5²

What is the radius of a circle with this information?

• √85

• √13

• √54

• √88

What is the radius of this circle?

• 6

• 36

• 18

• 12

What is the center of this circle?

• (0,0)

• (3,3)

• (6,6)

• (-6,-6)

Where is the center of this circle?

• (-2, -1)

• (2,1)

• (-2, 1)

• (2, -1)

Where is the radius of this circle?

• 4

• 2

• 16

• 8