Question

The diameter of wheel is 70 cm how many Revolution will it make to travel 66 km

Answer 1

Correct Question :

▪ The diameter of wheel is 70 cm. How many revolution will it make to travel 66 km ?

$\textbf {\underline {\underline {Step-By-Step\:Explanation:-}}}$

$\textbf{\underline {Given:}}$

• Diameter of wheel is 70 cm

$\textbf {\underline {To\:Find:}}$

• Number of revolutions it will make to travel 66 km.

$\textbf{\pink {\underline {Formula\:Used:}}}$

• Circumference of circle $= 2\pi \: r$

$\huge\underline\green {\tt Solution:}$

Circumference of the wheel

$= \pi \: \times diamter$

= 3.14 × 70

= 220 cm

Now,

➡ Convert it in Km :-

$= \frac{220}{100000} \\ \\ = 0.0022 \: km$

➡ To Travel 66 km : -

$= \frac{66}{0.0022}$

= 30, 000

Answer : It will make 30,000 revolutions to travel 66 km.