A circle has center C, as shown below, and diameter 32 cm. Find the length of arc AB if mAngle ACB = 90 degrees. length of arc AB = m arc AB/360 degrees x 2 r

1. What fractional part of the circle's circumference is arc AB? (Hint: A circle has 360 degrees.)

2. Use the fraction you determined in Part I and the circumference formula to find the length of arc AB. Show your work and round your answer to the nearest hundredth. (2 points)