Answer for some points
DavidRow > 01-19-2020, 02:30 AM
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