Question

the wheel of a bullock cart has a diameter of 1.4 metre how many rotations will the come the wheel complete as the car travels 1.1 km​

Answer 1

Answer:

250 rotations

Step-by-step explanation:

d = 1.4 m     then ,    r =  0.7m

distance  the car travelled  =  1.1 km

                                            =  1100 m

  one rotation of wheel  =  2 π r

                                        = 2 x 22 /7  x 0.7

                                       = 4.4m

no, of rotation   =   1100 / 4.4

                          = 250

Answer 2

Question:

The wheel of a bullock cart has a diameter of 1.4 metre. How many rotations will the wheel complete as the cart travel 1.1 km?

Solution:

Diameter of wheel = 1.4m

Radius of wheel = 0.7m

$\boxed{\sf{Perimeter\:of\: Circle=2 \pi r}}$

$\implies 2 \times \frac{22}{7} \times 0.7 \\ \implies2 \times 22 \times 0.1 \\ \implies4.4m$

Distance covered = 1.1 km = 1100m

Let the number of rotations be x.

$\boxed{\sf{Number\:of\: rotations= \frac{distance \: covered}{perimeter} }}$

$x = \frac{1100}{4.4} \\ x = \frac{11000}{44}$

$\boxed{\sf{x=250}}$

Therefore,the wheel completes 250 rotations as the cart travels 1.1 km.

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