let's take it to 2 parts first part is rectangular prism volumn = width • length • height = 13 • 13 • 30 (in • in • in) = 5070 in^3 second part is triangle prism volumn = base area • height = (1/2* 9 • 13) • 30 (in • in • in) = 1755 in^3 so the volumn of this figure is 5070+1755 = 6825 in^3