the radius of a semicircle is 7 . what is the approximate perimeter of the semicircle ?
perimeter of a circle = 2 pi * r perimeter of a semicircle = pi * r + 2 r aprox perimiter = 3.14 * 7 + 2 * 7 = 35.98 approximately 36 answer a
add(divide(circumface(7), const_2), add(7, 7))