A semicircle has a radius of 20. What is the approximate perimeter of the semicircle?	Pick one: A) 50 B) 25 C) 86 D) 75 E) 102

Rationale: "circumference of a circle = 2 pi * r perimeter of a semicircle = pi * r + 2 r aprox perimiter = 3.14 * 20 + 2 * 20 = 102.8 approximately 102 answer e"
Answer: E