Substitute r = 8 directly into the formula A = ¼ ?r². As you can see it gives exactly the same answer as method 1. Work out the area of this quadrant (radius 3.8m). = 14.44? (leave the answer as an exact solution as this need to be divided by 4).Jun 14, 2016 read more
A quadrant is a quarter of a circle. So to work out the area of a quadrant, first work out the area of the whole circle (use the formula A = π ×r²) and then divide the answer by 4. Alternatively, you could substitute the radius of the quadrant directly into the formula A = ¼ πr². read more