The total arm and blade of a windshield wiper is 15 in. long and rotates back and forth through an angle of 98°. The shaded region in the figure is the portion of the windshield cleaned by the ​10-in. wiper blade. What is the area of the region​ cleaned?

The total arm and blade of a windshield wiper is 15 in long and rotates back and forth through an angle of 98 The shaded region in the figure is the portion of class=