Find the area of the circle with the given radius or diameter. Use "3.14" for π. Round your answer to the nearest tenth. Diameter = 42.0 mm (1 point) Responses 137.6mm2 137.6mm 2 376.7 mm2 376.7 mm 2 1,384.7 mm² 1,384.7 mm² 6,027.0 mm2
The area of a circle can be calculated using the formula A = πr^2, where r is the radius of the circle. Since we are given the diameter, which is twice the radius, we can calculate the radius by dividing the diameter by 2.
Radius = 42.0 mm / 2 = 21.0 mm
Now we can plug the radius into the formula to find the area:
A = 3.14 * (21.0)^2 ≈ 3.14 * 441.0 ≈ 1,384.7 mm²
Therefore, the area of the circle with a diameter of 42.0 mm is 1,384.7 mm².