Taking care of units first:
4000cm = 40m
700cm = 7m
Let's find the area then:
A1 = Area of Small Rectangle = [tex]length*width[/tex]
A2 = Area of Large Rectangle = [tex]length*width[/tex]
A3 = Area of Semi-Circle = [tex]\frac{\pi r^{2}}{2}[/tex]
[tex]A=A1+A2+A3\\A=(lw) + (lw) + (\frac{\pi r^{2}}{2})\\A=[(10)(40)]+[(68)(33)]+[\frac{\pi r^{17}}{2}]\\A=(400)+(2244)+(8.5\pi)\\A=8.5\pi +2644\\A=(26.7)+2644\\A=26.7+2644\\A=2670.7m^{2}[/tex]
Then, to find the perimeter:
[tex]P=40+68+33+34+7+10+(\frac{2\pi r}{2})\\P=192+(\pi r)\\P=192+(17\pi)\\P=192+53.4\\P=245.4m[/tex]
In summary:
[tex]P=245.4m\\A=2670.7m^{2}[/tex]
