More information is needed EG what type of 12 inch blocks there are many(see link below).
Also what way up are you using these blocks.
http://www.boralbestblock.com/product-lines/masonry/standard-block/12-inch-block
Wiki User
∙ 15y ago12 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
4200 cubic feet
1.174 square feet.
16x16 square feet = 256 square feet, so two tiles will suffice.
1
4200 (square meters) = 45,208.4238 square feet.
4,200 square feet is 390.2 (390.1928) square meters.
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
Assuming they are 8 inch*16 inch blocks, 144 square feet = 144*12*12 square inches. So number of blocks required = 144*12*12/(8*16) = 162
390.192768 m2
4200 sq ft.
Tiles that are two feet on a side cover 4 square feet. 378 of them cover 1512 square feet.
A bundle of Shingles will cover roughly 33 square feet. A square of Shingles (3 Bundles) will cover 100 square feet.
337 and 1/2 Add 10% for breakage.
If the blocks are 12 inches x 12 inches then each block measures 1 square foot. An area of 14 feet x 14 feet has a surface area of 196 square feet, so it would require 196 of the 12" x 12" blocks to cover it.
"Square feet" aren't things that are used to cover area."35 square feet" is an amount of area that you have to cover with something.
A 16 foot by 16 foot block has an area of 256 square feet. It would require 4.836 16 foot by 16 foot blocks to cover an area of 1238 square feet.