Question

You ride your bicycle 40 meters. How many complete revolutions does the front wheel make?

Answer 1

Answer:

No. of complete revolutions = 20

Step-by-step explanation:

Given:

Distance covered by the bicycle = 40 m

Radius of the bicycle wheel = 32.5 cm = 0.325 m

Conversion:

⇒ $1\ cm=\frac{1}{100}\ m$

We have to find the number of revolution the front wheel make.

Let the no. of revolution be "N" .

As we know that:

Circumference times no. of revolution = Distance covered by circular objects.

Circumference = 2πr

So,

⇒ $Distance\ covered=N\times 2\pi (r)$

⇒ $\frac{Distance\ covered}{2\pi(r) } =N$

⇒ Plugging the values.

⇒  $\frac{40}{2\pi(0.325) } =N$

⇒ $\frac{40}{2.04} =N$

⇒ $19.6=N$

Approximated to 20.

Number of complete revolutions,the front wheel make = 20