What is the area of a circle with a radius of 11 and a circumference of 42?

To find the area of a circle with a given circumference, you can use the formula A = (C^2) / (4π), where A is the area and C is the circumference. Plugging in the values, we get A = (42^2) / (4π) = 1764 / (4π) ≈ 140.72 square units.