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 correct answer is 1,384.7 mm².
To find the area of a circle with the diameter given, you would first need to find the radius by dividing the diameter by 2. So in this case, the radius would be 42.0 mm / 2 = 21.0 mm.
Then, you can use the formula A = πr^2 to find the area.
A = 3.14 x 21.0^2
A = 3.14 x 441
A = 1,384.7 mm²
Therefore, the area of the circle with a diameter of 42.0 mm is 1,384.7 mm².