Question

(urgently)

2) the diameter of the front and rear wheels of a tractor are 80 cm and 2 m respectively . find the number of revolutions that rear wheel will make to cover the distance which the front wheel covers in 1400 revolutions.

Answer 1

check the pic for solution

Answer 2

Answer:

560

Step-by-step explanation:

Diameter of front wheel = 80 cm

Radius of front wheel = $\frac{80}{2}=40 cm$

Circumference of Front wheel=$2 \pi r$

                                                =$2 \times 3.14 \times 40$  

                                               =$251.2 cm$  

Distance covered by front wheel in 1 revolution= 251.2 cm

So, Distance covered by front wheel in 1400 revolution= $251.2  \times 1400=351680 cm$

So, total distance = 351680 cm

Diameter of rear wheel = 2 m =200 cm

Radius of rear wheel = $\frac{200}{2}=100 cm$

Circumference of rear wheel=$2 \pi r$

                                                =$2 \times 3.14 \times 100$  

                                               =$628 cm$  

Distance covered in one revolution by rear wheel = 628 cm

No. of  revolutions in 351680 cm = $\frac{351680}{628}$

                                                       = $560$

Hence  the number of revolutions that rear wheel will make to cover the distance which the front wheel covers in 1400 revolutions is 560