Geometry and TrigonometryMediumDistance rolled by a wheel in one turn
Geometry and Trigonometry practice question
A wheel has a radius of 0.5 metres. How far, in metres, does the wheel travel along the ground in one complete turn? Use 3.14 for π.
Answer: 3.14
One turn covers the circumference: 2 × 3.14 × 0.5 = 3.14.
Common wrong answers
- If you answered 1.57
- 1.57 uses the radius as the diameter.
- If you answered 0.785
- 0.785 is the area, πr².
- If you answered 6.28
- 6.28 doubles the answer.
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