Suppose that you are driving with a friend along a dirt road
     Suppose that you are driving with a friend along a dirt road in a car whose speedometer works but whose mileage counter is broken. To find out how long this road is, your friend records the car\'s velocity at 10-sec intervals. Estimate the length of the road using right-endpoints. Show all your work.  Suppose that   
  
  Solution
Its simple
At every 10 sec intervel he travels (42*10)+(24*10)+(32*10)+(40*10)+(30*10)+(42*10)=2100 feet
So the rood is 2100 feet long

