Giving Brainliest... ^^

Step 1: Find the volume of the cube
Volume of a cube = length x width x height
Volume = 15 x 15 x 15 = 3375
Step 2: Find the volume of the square pyramid
Volume of a square pyramid = 1/3 x length x width x height
Volume = 1/3 x 15 x 15 x 9 = 675
Step 3: Find the volume of the figure
Volume of the cube + volume of the square pyramid = volume of the figure
3375 + 675 = 4050
Answer: The volume of the figure is 4050 cubic feet.
Hope this helps!