A wheel is having a circumference of $56 \mathrm{cm}$.  How many revolutions it would make while crossing $1.11 \mathrm{km}$$\left(use\pi =\frac{22}{7}\right)$.

Starting with the provided diameter, we will calculate the wheel's radius.

The distance travelled must be measured in the same units, hence the distance travelled must be converted to cm. The circumference of the wheel will be equal to the total distance travelled during one revolution. Divide the entire distance by the distance covered in one revolution to determine the total number of revolutions.

Total distance covered by the wheel $=1.1 \mathrm{km}=1.1\times 100000 \mathrm{cm}=110000 \mathrm{cm}$

diameter of wheel $=56 \mathrm{cm}$

So, $\mathrm{r}=\frac{56}{2}$

$\mathrm{r}=28 \mathrm{cm}$

Now, Circumference of wheel = Distance covered in one round $=2\pi \times r=2\pi \times 28$

So, distance covered in one round $=176 \mathrm{cm}$

Number of revolutions $=\frac{\text{ total distance covered }}{\text{ Circumference }}$

$=\frac{110000}{176}$

So, number of revolutions covered by wheel $=625$