Red Area equals:

(/36pi-/5)(/36pi+3*/5)/2-(/36pi+2*/5)(/36pi-2*/5)/2-2.5-/5(/36pi-2*/5)

where / denotes squareroot NOT division.

36pi-15+2*/180pi-36pi+20-2.5-/180pi+10 or

/180pi+17.5 which equals approximately

41.280

Do I get the job?