A 52' x 48' by 4" pad requires 30.8 cubic yards. If you go up to 6" thick you would need 46.2 cubic yards.
17.3 cubic yards will do it.
105 m = 114.829 yrd
A 20'x35'x4" drive requires 8.64 cubic yards.
It would vary with the cost of concrete in your area and how thick the slab would be. I assume by the size that you are building a shop or similar. If so, I would go at least 6" thick. 1 cubic yard at 6" thick covers 6 square yards. So, you will get 6 square yards of concrete out of 1 cubic yard. You have 1680 square feet, divide that by 9 for square yards = roughly 186 square yards. 186 square yards divided by 6 = 31 cubic yards At $110 per yard here in the midwest, it would cost $3410. But, I would figure extra to make sure you had enough when pouring it. Possibly 1 or 1 1/2 yards extra.
There are 16 yards in 48 feet
A 52' x 48' by 4" pad requires 30.8 cubic yards. If you go up to 6" thick you would need 46.2 cubic yards.
16
3600
48ft*72ft = 3456ft2
48 feet is 14.63 meters.
48 feet is 14.63 meters.
4800 square feet.
240
It depends what it is.
26 ft * 48 ft = 1248 square feet.
A 48ft by 10ft room is 480 square feet