Question

the radius of the weel of bus is 0.7 how many ratations will a wheel completed while travelling a distance of 21 km​

Answer 1

Answer:

Step-by-step explanation:

First you find out the circumference of the wheel using

2 x (pi) x r formula

You will get the answer as 4.4 m

now you convert the 21 km into m = 21000m

now all you have to do is find t in the following equation

4.4 m x t = 21000m

             t = 21000/4.4

thank you