Question

Which of the following uses the correct formula to find the approximate circumference of a circle that has a radius of 450?(1 point)
Responses

C≈3.14⋅4502
𝐶
≈
3.14
⋅
450
2

upper C approximately equals 3.14 times 450 squared

C≈2⋅3.14⋅450
𝐶
≈
2
⋅
3.14
⋅
450

upper C approximately equals 2 times 3.14 times 450

C≈3.14⋅150
𝐶
≈
3.14
⋅
150

upper C approximately equals 3.14 times 150

C≈3.14⋅450÷2

Answer 1

C ≈ 2·3.14·450

Reason: circumference C = 2πr, so C ≈ 2·3.14·450 = 6.28·450 ≈ 2826. The first option is πr^2 (area), the others are incorrect.