Circles, Turns, and Degrees

Write the equation of a circle with center (7, 0) with radius 3.

• (x - 7)² + y² = 9
• x² + (y -7)² = 9
• (x - 7)² + y² = 3
• x² + (y -7)² = 3

What are the coordinates of the center and the radius of the circle with equation:
(x - 4)² + (y - 3)² = 25 ?

• Center (4,3)
  Radius = 5 units
• Center (4,3)
  Radius = 25 units
• Center (-4,-3)
  Radius = 25 units
• Center (-4,-3)
  Radius = 5 units

What is the equation for this circle?

• (x+1)+(y+1)=9
• x²+y²=9
• x+y=9

What is the equation of this circle?

• (x-1)²+(y-2)²=16
• (x+1)²+(y+2)²=4
• x²+y²=16

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

• (-2,5)

• (2,7)

• (-2,-3)

Change the following equation to standard form
x²+y²-4x+12y-8=0

• (x+2)²+(y-6)²=48
• (x-2)²+(y+6)²=48
• (x-6)²+(y-2)²=48
• (x+2)²+(y+6)²=48

In circle O, the radius is 4, and the measure of minor arc AB is 120 degrees. Find the length of minor arc AB to the nearest integer.

• 5
• 9
• 8
• 6

FIND THE ARC LENGTH OF THE BOLDED ARC

• A
• B
• C
• D

Assume that all the lines that appear tangent are tangent. Find the perimeter

• 54
• 36
• 48
• 42

• A
• B
• C
• D