# Find the Surface Area cylinder (8.2)(4) h=8.2r=4
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.
Substitute the values of the radius r=4 and height h=8.2 into the formula. Pi π is approximately equal to 3.14.
2(π)(4)2+2(π)(4)(8.2)
Simplify each term.
Raise 4 to the power of 2.
2π⋅16+2(π)(4)(8.2)
Multiply 16 by 2.
32π+2(π)(4)(8.2)
Multiply 4 by 2.
32π+8π⋅8.2
Multiply 8π⋅8.2.
Multiply 8.2 by 8.
32π+65.6π
Multiply 65.6 by π.
32π+206.08847807
32π+206.08847807
32π+206.08847807
Add 32π and 206.08847807.
306.61944299
Find the Surface Area cylinder (8.2)(4)

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