Question

The wheel of a bullock cart has a diameter of $1.4m$ . How many rotations will the wheel complete as the cart travels $1.1km$ ?

Answer 1

Diameter of cart $=1.4$m

Circumference $=\pi d=\frac{22}{7}\times 1.4$

$=22\times 0.2$

$=4.4$ metres

$1$ rotation of the wheel travels $4.4$ metres.

Total distance to travel $=1.1$km $=1100$m

No. of rotations required $=\frac{1100}{4.4}=\frac{11000}{44}=250$

The wheel completes $250$ rotations to reach $1.1$km.