A given sector covers of a circle. What is the corresponding angle of the sector?

In the above figure, give the intersection of and .

What is the arc length for a sector with a central angle of if the radius of the circle is ?

What is the area of a circle with a diameter of ?

The average of 10, 25, and 70 is 10 more than the average of 15, 30, and x. What is the missing number?

The circle in the above diagram has center . Give the area of the shaded sector.

Statement 1: Arc has length .

Statement 2: Arc has length .

The chord of a central angle of a circle with area has what length?

A coin is flipped four times. What is the probability of getting heads at least three times?

The point lies on a line with a slope that passes through . What is the value of ?

The arc of a circle measures . The chord of the arc, , has length . Give the length of the radius of the circle.