Find the Surface Area cylinder (20)(8.5)

Math
h=20r=8.5
The surface area of a cylinder is equal to the sum of the areas of the bases each having an area of π⋅r2, plus the area of the side. The area of the side is equal to the area of a rectangle with length 2πr (the circumference of the base) times the height.
2π⋅(radius)2+2π⋅(radius)⋅(height)
Substitute the values of the radius r=8.5 and height h=20 into the formula. Pi π is approximately equal to 3.14.
2(π)(8.5)2+2(π)(8.5)(20)
Simplify each term.
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Raise 8.5 to the power of 2.
2π⋅72.25+2(π)(8.5)(20)
Multiply 2π⋅72.25.
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Multiply 72.25 by 2.
144.5π+2(π)(8.5)(20)
Multiply 144.5 by π.
453.96013844+2(π)(8.5)(20)
453.96013844+2(π)(8.5)(20)
Multiply 2π⋅8.5.
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Multiply 8.5 by 2.
453.96013844+17π⋅20
Multiply 17 by π.
453.96013844+53.40707511⋅20
453.96013844+53.40707511⋅20
Multiply 53.40707511 by 20.
453.96013844+1068.14150222
453.96013844+1068.14150222
Add 453.96013844 and 1068.14150222.
1522.10164066
Find the Surface Area cylinder (20)(8.5)

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