Answer: The area of the circle equals 1384.74 in²
Step-by-step explanation: The first and only clue we have here is that the diameter of the circle has been provided, which is 42. That makes the radius equal to 21, since half of a diameter is the radius.
With the area and the radius already known, we shall now express the area as follows
Area of circle = πr²
Area of circle = 3.14 x 21²
Area of circle = 3.14 x 441
Area of circle = 1384.74 in²