That depends - whether your 4x8 bricks are in centimetres, metres, inches or feet.
Assuming the 12x12 bricks are 12 feet on each side, those are 144 square feet. The patio itself is 76 square feet. Unless you made a typo, not even one of those bricks is going to fit on the patio; you end up with about 0.5278 bricks.
If the bricks are in feet then 51/2 bricks would be needed.
It depends on how big the bricks are? How big are they? And does 10X10 mean 10X10 metres or feet?
That depends on the size of the bricks you want to use, and what unit you've measured in-10 metres by 20 metres? 10 feet by 20 feet?
64
The answer will depend on the size of the bricks!
Assuming the 12x12 bricks are 12 feet on each side, those are 144 square feet. The patio itself is 76 square feet. Unless you made a typo, not even one of those bricks is going to fit on the patio; you end up with about 0.5278 bricks.
If the bricks are in feet then 51/2 bricks would be needed.
It depends on how big the bricks are? How big are they? And does 10X10 mean 10X10 metres or feet?
450 bricks
That depends on the size of the bricks you want to use, and what unit you've measured in-10 metres by 20 metres? 10 feet by 20 feet?
64
122 x pi = 452.39
About 14 bricks should do it.
38
81. 12 feet = 144 in, which is exactly 9 x 16. 9 - 16" bricks on a side, 9 x 9 = 81 bricks.
115 should do it!