1. The area of a sector of a circle is 18 square inches, while the corresponding arc length is 4 inches. What is the area of the circle? 2. The area of a sector of a circle is 25 m, and the corresponding central angle is 45. What is the radius of the circle? Round off your answer to two decimal places. 3. What is the central angle, in degrees, that corresponds to an arc length of 16 inches, given that the diameter of the circle is 48 inches? Round off your answer to the nearest whole number. 4. A circular wooden frame is adorned with twenty-five semiprecious stones that are equally spaced around its circumference. What is the length of the arc occupied by four consecutive stones if the circumference of the frame is 100 cm? 5. A twelve-inch pizza is cut into 8 slices. What is the area of each slice