To determine how many concrete hollow blocks (CHB) are needed for a 16 square meter wall, you first need to know the size of the CHB being used. A standard CHB typically measures 40 cm x 20 cm x 10 cm, which has an area of 0.08 square meters. Dividing the total wall area (16 sq m) by the area of one block (0.08 sq m) gives approximately 200 blocks, not accounting for mortar gaps or wastage. It's advisable to purchase extra blocks to cover any breakage or cutting needs.
It might depend somewhat on what you need to 'do' to the 400 sq ft.If the area is flat, such as a floor or a wall, it will take 225 of them.
16 sq. inches
16 km2 = 6.17763454 mi2
169/16 = 10.5625 of them.
16 sq yd 1 sq yd = 9 sq ft
16 square feet is equivalent to 1.49 square meters.
288 sq ft
About 160 square feet
1280 sq ft
16 sq ft = 1.486 sq metres (to 3 dp)
If you mean 16 feet x 16 feet, then its 252 sq ft. Easy to figure out (16 times 16) 256 sq inches, or 1.777 sq ft.
96 sq ft.