Question
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
547.1 mm2
60.8 mm2
243.3 mm2
972.6 mm2
Answers
GPT 3.5
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.
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.