Depends on the size of the sheets of plywood.
6-4'x8' sheets
Plywood comes in 4' by 8' sheets. 4x8=32sf. 56/32=1.75 or 2 full sheets
Plywood comes in 4 x 8 sheets = 32 sq ft 300/32 = 9.37 so you need 10 sheets
Standard plywood is 4x8. Meaning it will cover 32 square feet. So you will need four full sheets.
4-ft x 8-ft = 32 square feet in each sheet400/32 = 121/2 sheets
Generally plywood comes in a 4' x 8' sheet which is 24 square feet...meaning 1 sheet is all you need for 18 square ft.
I
124.7 sheets
768 sq ft
If each sheet of plywood measures 4x8 feet, then each sheet covers an area of 32 square feet. To find the number of sheets needed to cover the floor, divide the total area of the floor (40 feet x 28 feet = 1,120 square feet) by the area covered by each sheet (32 square feet). Therefore, 35 sheets of plywood are needed to completely cover the floor.
Six four by eight sheets of plywood.