The diagonal of the figure forms a right angle triangle with the diagonal of the base and the height of the figure. Diagonal of base = √(3² + 4²) = 5ft Diagonal of solid² = Diagonal of base² + height² height = √((√41)² + 5²) height = 8.12 feet Volume = width x length x height Volume = 3 x 4 x 8.12 = 97.44 cubic feet
You just have to figure it where you can place 2 solid lines and get 10 triangles ( i can only get 9). Think about the pentagon in the middle of the triangles and see if somehow you can create more triangles using only the two straight lines.
