What is the wet volume of hollow concrete block with a size thickness 20cm and height 20cm?

To calculate the wet volume of a hollow concrete block, you need to know the dimensions of the block and the thickness of the walls.

Assuming the block has a length of 20cm, width of 20cm, and thickness of 20cm, the wet volume can be calculated as follows:

1. Calculate the volume of the entire block:
Volume = Length x Width x Height
Volume = 20cm x 20cm x 20cm
Volume = 8000 cubic centimeters

2. Calculate the volume of the hollow part of the block:
Volume of hollow part = (Length - 2 x Thickness) x (Width - 2 x Thickness) x Height
Volume of hollow part = (20cm - 2 x 20cm) x (20cm - 2 x 20cm) x 20cm
Volume of hollow part = 0 x 0 x 20cm
Volume of hollow part = 0 cubic centimeters

3. Calculate the wet volume of the block:
Wet volume = Volume - Volume of hollow part
Wet volume = 8000 cubic centimeters - 0 cubic centimeters
Wet volume = 8000 cubic centimeters

Therefore, the wet volume of a hollow concrete block with a size thickness of 20cm and height of 20cm is 8000 cubic centimeters.