a tank is the porm of an iverded regular pyramid with a square base 3 meters in on a side and a heigth of 5 meters how many liters of water are in it if the depeth of the water is 3 meters
Take a side view
The length of the water surface is 3/5 as long as the depth (use similar triangles)
So, when the water is 3m deep, you have a pyramid of water with a base 9/5 m on a side.
Now the volume is as usual, 1/3 Bh