1.777777
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12 x 12 blocks (assumed as 12 inch x 12 inch) That means the blocks are 1 square foot each Hence to cover 240 square feet area, you would need 240 blocks
One square inch is 1/144 of a square foot.1 square inch = 0.006944 square foot (rounded)1 square foot = 144 square inches
1 square ft= 144 square inch
64 of them.
I think perhaps 2250 blocks .
64
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.
50
To cover an 81 square foot area, you first need to convert the dimensions of the 12x12 blocks to square feet. Each 12x12 block is 1 square foot (since 12 inches = 1 foot). Therefore, you would need 81 blocks to cover the 81 square foot space.
1 square foot = 144 square inches.
1/144 of square foot