Circle Geometry Quiz

What is the equation of the circle with center (13, -13) and radius 4?

• (x - 13)² + (y + 13)² = 16

• (x + 13)² + (y - 13)² = 16

• (x - 13)² + (y - 13)² = 4

• (x + 13)² + (y + 13)² = 4

What is the center of a circle with the equation (x + 4)² + (y - 7)² = 49?

• (-4, 7)

• (4, -7)

• (4, 7)

• (-4, -7)

What is the radius of a circle with the equation x² + y² = 64?

• 8

• 6

• 4

• 10

What is the center of a circle with the equation (x - 6)² + (y + 8)² = 81?

• (6, -8)

• (-6, 8)

• (6, 8)

• (-6, -8)

• 0

• (0,0)

• 49

• 7

Answer explanation

Tags

CCSS.HSG.GPE.A.1

What is the center for the circle with this equation x² + y² + 4x + 6y - 36 = 0?

• (-2, 5)

• (2, 7)

• (-2, -7)

• (-2, -3)

In the equation (x-3)²+(y-2)²=16, the center of the circle is...

• (3,2)
• (-3, -2)
• (-2, -3)
• (2, 3)

What is the center of the circle with this equation is (x+2)²+(y-4)²=41?

• (-2,41)

• (-2,4)

• (2,-4)

• (2,41)

Tags

CCSS.HSG.GPE.A.1

The center of this circle is located at (2, 3). What is the radius of this circle?

• 3

• 9

• 2.5

• 2