Assumption: 6 x 6 is using inches as the unit (half a foot) and a 4 foot board means 4 square feet of board.
Each square foot of board can be cut into four half foot x half foot pieces.
Therefore, the 4 foot board would be able to make 16 half foot x half foot (6 inch x 6 inch) blocks.
When you say 1 foot block, are they square blocks with side equal to 1 foot, in that case you would need 240 blocks
150
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All depends how high you want to build the walls. You'll have to decide that before you start.
FOUR
When you say 1 foot block, are they square blocks with side equal to 1 foot, in that case you would need 240 blocks
1.777777
4 board feet in a 1x6x8
8.3 pieces
You measure it by the square foot. The common 'board' is 32 sf. larger boards are also made in many plants.
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A 2x12x12 foot board would not be measured in square feet but cubic feet and there would be 240 feet3
None. Board foot is a measure of volume not area.
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A board foot is a unit of volume, while a square foot is a unit of area. The two units are therefore incompatible.
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