Question

36. The diameters of the front and rear wheels of a tractor

are 80 cm and 200 cm respectively. What is the umber

of revolutions of rear wheel to cover the distance which

the front wheel covers in 800 revolutions?

(a) 320

(b) 420

(c)820

(d) 640.

​

Answer 1

Answer:

The diameters of the front and rear wheels of a tractor are 80 cm and 200 cm respectively. Find the number of revolutions of rear wheel to cover the distance which the front wheel covers in 800 revolutions.Read more on Sarthaks.com - https://www.sarthaks.com/178138/the-diameters-of-the-front-and-rear-wheels-of-a-tractor-are-80-cm-and-200-cm-respectively

Answer 2

Answer:

Given diameter of front wheels(2r)=80cm⇒r=40cm

diameter of rear wheels(2r)=2m⇒r=1m=100cm

In one revolution area covered is =2πr

∴ Distance covered by front wheel in 1400 revolutions =1400×2π(40)

Let us assume that to cover same distance rear wheel will take x revolutions=x×2π(100)

As both wheel will cover same distance ∴1400×2π(40)=x×2π(100)

x=  

100

1400×40

​

=560

That means rear wheel will make 560 revolutions to cover the r

Step-by-step explanation: