For the data tabulated, calculate the volume of excavation in cubic yards between stations 10 + 00

Question:

For the data tabulated, calculate the volume of excavation in cubic yards between stations 10 + 00 and 15 + 00.
Cut End
StationArea (ft2)
10 + 00..............................263
11 + 00..............................358
12 + 00..............................446
13 + 00..............................402
14 + 00...............................274
15 + 00...............................108