A cylindrical silo has a height of 15.5 meters and a diameter of 4.2 meters if 1 can of paint covers 10 square meters how many cans must be bought to paint the curved face with one coat
Area of the curved face: "A=\\pi dh=\\pi*4.2*15.5=204.5 m^2."
Number of cans: "N=\\frac{A}{10}=\\frac{204.5}{10}=20.45\\;cans\\approx 21 \\;cans."
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