Which expression represents the volume, in cubic units, of the composite figure?​

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?