The wheel of a cycle rickshaw has a diameter of 70 cm. How many complete turns does it make while covering 44 m? Use π = $\frac{22}{7}$.

**Circumference = π × $d=2$ × π × $r$.**

Use π = $\frac{22}{7}$ when the radius is a multiple of 7 (cleaner arithmetic). Use π ≈ 3.14 otherwise (or leave the answer in terms of π).

Example $(r=7$ cm, π = $\frac{22}{7}):C=2\times \frac{22}{7}\times 7=44$ cm.

Example $(r=5$ cm, π ≈ 3.14): $C$ ≈ $2\times 3.14\times 5=31.4$ cm.