How much volume of water in MegaLiters (ML) is required to irrigate 30 Hectare crop area with depth of 20mm?

Volume (in cubic meters) = Area (in square meters) x Depth (in meters) First, you need to convert the area from hectares to square meters. One hectare is equal to 10,000 square meters. 30 hectares = 300,000 m² Now, convert the depth from millimeters to meters. There are 1,000 millimeters in a meter. $$Depth\: = \:\frac{20mm} {1000} = \:0.02 \:meters $$ Now, you can calculate the volume: Volume = 300,000 square meters x 0.02 meters = 6,000 cubic meters Since 1 cubic meter is equal to 1,000 liters, you can convert this to MegaLiters (ML): $$Volume =\frac {6,000 cubic meters} {1,000} \:= \:6 ML $$ So, 6 MegaLiters (ML) of water are required to irrigate a 30-hectare crop area with a depth of 20mm.