Question

the diameter of a bicycle wheel is 0.7 meters. find the number of complete revolutions made by the wheel if the bicycle travels 440 meters. use 22/7 as an approximation for $\pi$

Answer 1

Answer:

$200\ rev$

Step-by-step explanation:

we know that

$1\ rev=2\pi r$ ----> circumference of a circle

step 1

Find the circumference of a circle

The circumference is equal to

$C=2\pi r$

we have

$r=0.7/2=0.35\ m$ ----> the radius is half the diameter

$\pi=22/7$

substitute

$C=2(22/7)(0.35)=2.2\ m$

step 2

Find the number of complete revolutions made by the wheel if the bicycle travels 440 meters

Divide the total distance by the circumference

$\frac{440}{2.2}=200\ rev$