The area of the washer can be calculated by finding the area of the larger circle and subtracting the area of the smaller circle.
Area of larger circle = π(13.2/2)^2 = π(6.6)^2 = π(43.56) ≈ 135.8 mm^2
Area of smaller circle = π(13.2/2)^2 = π(6.6)^2 = π(43.56) ≈ 135.8 mm^2
Area of washer = 135.8 - 135.8 = 0 mm^2
Therefore, the area of the washer is 0 mm2. None of the given options are correct.
A metal washer is made by cutting out a circle 13.2 mm in diameter from a larger circle. To the nearest tenth, what is the area of the washer?
547.1 mm2
60.8 mm2
243.3 mm2
972.6 mm2
1 answer