For a round pool with a circumference of 28.26 meters, a stone path with a width of 1 meter should be built around the pool, and the area of the path should be calculated

For a round pool with a circumference of 28.26 meters, a stone path with a width of 1 meter should be built around the pool, and the area of the path should be calculated

Inner radius 28.26 △ 3.14 △ 2 = 4.5m
Outer radius 4.5 + 1 = 5.5m
Area 3.14 × (5.5 × 5.5-4.5 × 4.5) = 3.14 × 10 = 31.4 square meters