A soil was determined to have the following properties:fc = 30% by mass soil depth = 20 cmwc = 15% by mass bulk density = 1.35 g/cm3a) calculate the weight of 1ha of soil plowed to a depth of 20 cm.b. if you were to irrigate the first 30 cm depth of soil,b1. calculate the amount of water (in cm) that you must apply if the field moisture content is 20%.b2. if the field grown to corn, which is by visual observation is now wilting permanently, how much water will you apply to attain the moisture content at field capacity.