Use the formula: 2X3.14Xr2Xh + 2X3.14XrXh
it may be confusing, because it is long
2 times pi time radius squared times height plus 2 times pi times radius times height.
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To determine the number of quarts needed to clean 1500 cylinders, we first need to calculate the total surface area of all the cylinders. Once we have that total surface area, we can divide it by the surface area cleaned by one quart (7200 square inches) to find the number of quarts required. The formula to find the surface area of a cylinder is 2πrh + 2πr^2, where r is the radius and h is the height of the cylinder.
Add the areas of all shapes or all faces that make up the composite figure.
NO a cone is not a polyhedron as it has a curved surface. Similarly sphere and cylinders r 3D but not polyhedrons
It is possible for some cones A and cylinders B. But in general, the assertion is false.
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