I can someone help ?! I don’t understand!

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

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers