Answer:
there are 2 half circles
and 2 half circles make 1 circle
radius = 20/2 mm = 10mm
so, the
area = area of the rectangle + area of the circle
area = (31*20 + pi*[tex]10^{2}[/tex]) sq.mm
area = (620 + 314.16) sq.mm
area = 934.16 sq.mm
and perimeter = perimeter of the circle + 2*length of the rectangle
perimeter = 2*10*pi + 2*31 mm
perimeter = 62.832 + 62 mm
perimeter = 124.832 mm
answer: area = 934.16 sq.mm and perimeter = 124.832 mm
