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Answer for some points - DavidRow - 01-19-2020
A can is made of aluminumIt has a flat top and bottomThe height is 4 inches and the radius is 8 inchesHow much aluminum is needed to make the can? use r3.14 as the approximate value and round to the nearest hundredth.surface area of a cylinder is area of top + area of bottom + area of curved surfacearea of top area of bottom Pir^2 64pi as we need top + bottom we get 128pi for the curved surface we need (heightcircumference of the top/bottom circle)circumference 2pir 16pi so heightcircumference 64pi so total surface area is 128pi + 64pi 192pi 192(3.14) 602.88Other related question
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