Solution:
we have been given that
A police officer counted 22 revolutions of a wheel to measure the length of a skid mark. the diameter of the wheel was 15 in it mean radius is 15/2 in.
we have been asked to find how long was the skid mark in length?
As wse know that length of one revolution[tex] =2 \pi r=2* \pi *15/2=15 \pi [/tex]
So the lngth of 22 revolutions[tex] =22*15 \pi=330 \pi \approx 1037 in [/tex]
