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tai ** (R)
1 The radices of the cylindrical rock core is 1cm, the length
is 5cm, and the viscosity of the oil is impa. s. The Pressure
difference between the two ends of the rock core 15 0-2
atmospheric pressure and we get 15 cm3 oil from the outlet
in 2 minutes, Please find permeability of the rock core.

(05.02)a farmer has decided to divide his land area in half in order to plant soy and corn. calculate the area of the entire area so he knows how much soil is needed. a parallelogram with a height of 6 yards and side length 9 yards. the height forms a triangle with the slanted side of the rhombus with a base of 2.5 yards. rhombus is split into a soy half and a corn half. each bag of soil covers 40 square yards. how many bags should the farmer purchase?