Answer: 38.13 square meters approximately
Work Shown:
A = area of the triangle
A = 0.5*base*height
A = 0.5*4*3
A = 6
B = area of the rectangle
B = length*width
B = 6*3
B = 18
C = area of the semicircle
C = 0.5*pi*r^2
C = 0.5*3.14*3^2
C = 14.13 approximately
D = total area
D = A+B+C
D = 6+18+14.13
D = 38.13 square meters approximately