Question

a bicycle wheel makes 500 revolution in moving one kilometre find the diameter of the wheel

Answer 1

Given,
The distance covered by the wheel in 500 revolutions =1 km
Let, radius of the wheel =r, d=diameter of the wheel =2r.
So, 500 × circumference of the wheel = 1 km
=>500 × 2πr = 1 km
=>500 × πd = 1 km
=>d = 1/(π × 500)
=>d = 0.00064 km= 0.64 m =64 cm.

Answer 2

Answer:

${\huge{\underline{\underline{\sf{\blue{Solution:-}}}}}}$

Given:-

A bicycle wheel makes 500 revolution in moving one kilometre. Find the diameter of the wheel.

To find :-

Find the diameter of the wheel.

Hence,

Distance covered in 500 revolutions

= 1 km or 1000 m

Distance covered in 1 revolution

$= \frac{1000}{500} = 2m$

i.e., Circumference of the wheel,

$\pi \: d \: = 2m$

$= > \frac{22}{7} \times d \: = 2m$

$= > d = 2 \times \frac{7}{22} = 0.64m \: = 64\: cm$

Thus, diameter of the wheel is 0.64 m or 64 cm