<span>perimeter of a semicircle is calculated as follows;
diameter = 35 inches
circumference of circle - 2</span>πr <span>r - radius - r = diameter / 2 = 35 /2 = 17.5 inches
circumference = 2 x 3.14 x 17.5 = 109.9 inches
circumference is perimeter of whole circle. we need to find the circumference for half the circle. therefore perimeter for the curved line = 109.9 / 2 = 54.95 inches
perimeter of half circle = diameter + curved line perimeter = 35 + 54.95 = 89.95 inches