Seatwork # 3. ( Use ] whole sheet of paper. Show your solutions) 1. Radian measure simplifies many formulas, such as the formula for are length, s - 19. Give the corresponding formula when & is measured in degrees instead of radians. 2. Give the corresponding formula for the area of a sector when the angle is measured in degrees. 3. Find the length of an arc of a circle with radius 21 m that subtends a central angle of 150. 4. A central angle & in a circle of radius 9 m is subtended by an arc of length 12 m. Find the measure of 8 in radians. 5. A jeepney has a windshield wiper on the driver's side that has total arm and blade 10 inches long and rotates back and forth through an angle of 95%. The shaded region in the figure is the portion of the windshield cleaned by the 7-inch wiper blade. What is the area of the region cleaned? 95 total arm 10 in wiper blade 7 in