Find the area of the circle with the given radius or diameter. use "3.14" for pi. Round your answer to the nearest tenth.
Diameter: 42.0 mm
First, we need to find the radius of the circle. The radius is half the diameter, so the radius is 42.0 mm / 2 = 21.0 mm.
Next, we can use the formula for the area of a circle: A = πr^2, where A is the area and r is the radius.
Plugging in the values, we get:
A = 3.14 x (21.0)^2
A = 3.14 x 441.0
A = 1383.54 mm^2
Therefore, the area of the circle with a diameter of 42.0 mm is approximately 1383.5 mm^2.