Question 577748
bicycle wheel makes 5000 revolution in moving 11 km. find the diameter of the wheel.
:
Find the number of meters in 11 km, divide by 5000
{{{(11*1000)/5000}}} = 2.2 m, is the circumference of the wheel
{{{pi*d = 2.2}}}
:
d = {{{2.2/pi}}}
d = .7 meters or 70 cm is the diameter of the wheel
;
:
Check this by finding how far the you go in 5000 rev
{{{(5000*pi*.7)/1000}}} = 10.99 ~ 11 km