A certain pizza restaurant cuts slices out at every 6 inches along the edge of a pizza, as shown in the figure above. What is the maximum number of full pizza slices that can be cut out from a circular pizza with a radius of 15 inches?

A) 145

B) 15

C) 13

D) 16

In the figure above, the circle has center O and segment AB is tangent to the circle. If angle ABO measures π/18 radians and the area of the shaded sector is π, what is the area of the circle?

A) \$(3\pi)/5\$

B) \$(5\pi)/7\$

C) \$(7\pi)/5\$

D) \$(9\pi)/5\$

In the figure below, circle P has a radius of 3, circle Q has a radius of 6, and circle R has a radius of 9. What is the area of the shaded region?

A) 108π

B) 126π

C) 84π

D) 54π

A circle in the xy-plane is centered at (1, 3) and contains the point (6, 9). Which of the following could be the equation of the circle?

A) \$(x - 1)^2 + (y - 3)^2 = 61\$

B) \$(x + 1)^2 + (y + 3)^2 = \sqrt61\$

C) \$(x - 1)^2 + (y - 3)^2 = 61\$

D) \$(x + 1)^2 + (y + 3)^2 = \sqrt61\$

In the figure below, A and B are points on the circle C. If the area of the circle is 72π, what is the area of the sector formed by central angle ACB?

A) 14π

B) 12π

C) 10π

D) 16π