1.
area of big rectangle = 12 x 15 = 180
area of triangle = 1/2 (6)(4) = 12
Area of figure = 180 - 2(12) = 156 m^2
2.
Area of rectangle = 13 x 18 = 234
Area of semi-circle = 1/2 pi r^2= 254.47 / 2 = 127.235
Area of figure = 234 + 127.235 = 364.235 m^2