Question

Which of the following is the best approximation of the circumference of a bicycle wheel whose diameter is 26 centimeters?

82 cm
163 cm
531 cm
2,123 cm

Answer 1

I think the answer is 531 cm

Answer 2

Answer: 82 cm

Explanation:

Circumference is pi times diameter. A common value of pi is 3.14.

So the number we should choose is a little more than 3× 26 = 78.

82cm is the answer that works.