A 40-inch pendulum swings through an angle of 18°. Find a) The length of the arc in inches through which the tip of the pendulum swings.
b) The area of the region in which the pendulum moves

10000000000000000000000000000000

5/12, or 5: 12

step-by-step explanation:

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.