The velocity graph of a car accelerating from rest to a speed of 105 km/h over a period of 30 seconds is shown. Estimate the distance,dtraveled during this period. (UseM6 to get the most precise estimate. Round the answer to two decimal places.)

a=35

I get the delta x, and multiply it by the y value corresponding to the middle of the rectangle, but my problem is i cant get it accurate enough to 2 decimal points :/