a box is in the shape of a semicircle with a radius of 12 . 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 * 12 + 2 * 12 = 61.68 approximately 62 answer b
add(multiply(const_pi, 12), multiply(const_2, 12))