Properties of Circles
The paper fan shown was cut from a circle whose area is \(18\pi.\) What is the area of the fan?
In the square above, what is the area of the section shaded green?
A quarter circle has the same area as a circle with a radius of 4. What is the radius of the quarter circle?
What percent of the sector is shaded red?
A small circle rolls around the edge of a larger circle exactly 11 times to return to its starting location. If the large circle has a diameter of 20, what is the radius of the smaller red circle?