Answer:
Step-by-step explanation:
69.53 ft
area of a box: 18*18 = 324
area of a circle: (pi)*9^2 = 254.47
324-254.47 = 69.53 ft
The integration region is the triangle in the plane bounded by the lines , , and . Reversing the order of integration, this is equal to
For the remaining integral, let :