Question

6. The diameter of the wheel of a car is 77 cm. How
many revolutions will it make to travel 121 km ?
lius 29​

Answer 1

Answer:

Hey mate!!!!!

First we should take out the circumference

Circumference = 2πr or πd

so assuming π as 22/7 we have

circumference =

\frac{22}{7} \times 77 = 242

7

22

×77=242

242 cm

Now since the circumference is in cm we should convert the distance also in cm.

Given distance 121km

1km = 1,00,000cm

121km = 1,21,00,000cm

Now to find out the revolution, we have to divide the distance by circumference

So distance=

12100000 \div 242 = 5000012100000÷242=50000

50,000

So the wheel should complete 50,000 revolution.

Hope it helps dear friend ☺️✌️✌️