A 6 by 100ml used drills is to plant 10kg of maize per hectare.if the diameter of the drive wheel is 2m. calculate (1) the width of the seed drill.(2) the length of travel necessary for the drill to cover 1 hectare (3) the number of wheel revolution to cover 1 hectare.(4) the amount of seed grain each to be discharged to plant 1 hectare?