Assuming the circle has a diameter of 12', its area is pi*62 = 113.1 sq ft (approx).
Four pavers of 4ft x 8 ft, each with an area of 32 sq ft will cover 128 sq ft in all. However, it will be necessary to use the offcuts.
how many 12 in by 12 in pavers is required for30 square feet
120
If you mean 12" x 12" (= 1 ft²) then you will need 224 pavers.
36
You would need 20 pavers 20 times which is 20x20=400.
To calculate how many 4x8 pavers are needed for a 10x12 patio, first find the area of the patio: 10 feet x 12 feet = 120 square feet. Next, calculate the area of one paver: 4 feet x 8 feet = 32 square feet. Finally, divide the patio area by the paver area: 120 square feet ÷ 32 square feet = 3.75. Since you can't have a fraction of a paver, you'll need 4 pavers to cover the patio completely.
how many 12 in by 12 in pavers is required for30 square feet
4
120
If you mean 12" x 12" (= 1 ft²) then you will need 224 pavers.
36
648
You would need 20 pavers 20 times which is 20x20=400.
Area of 1 paver 1 sq ft, area of patio 144 sq ft so 144 pavers.
Assuming the question is about pavers that are 12 inch x 12 inch, then each paver covers 1 sq foot and so 150 pavers would be required. However, this also assumes that there is no wastage at all and that there are no breakages.
The patio is 10x 12 = 120 sq ft or 17,280 sq in The pavers are 16x16 = 256 sq in So you need 17280/256 = 68 pavers
I am guessing a public school graduate. 30 pavers as 12x12 is 1 foot. You are either on the metric system or kidding right?