# Find the Surface Area cylinder (7.8)(4.9) h=7.8r=4.9
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=4.9 and height h=7.8 into the formula. Pi π is approximately equal to 3.14.
2(π)(4.9)2+2(π)(4.9)(7.8)
Simplify each term.
Raise 4.9 to the power of 2.
2π⋅24.01+2(π)(4.9)(7.8)
Multiply 2π⋅24.01.
Multiply 24.01 by 2.
48.02π+2(π)(4.9)(7.8)
Multiply 48.02 by π.
150.85927922+2(π)(4.9)(7.8)
150.85927922+2(π)(4.9)(7.8)
Multiply 2π⋅4.9.
Multiply 4.9 by 2.
150.85927922+9.8π⋅7.8
Multiply 9.8 by π.
150.85927922+30.787608⋅7.8
150.85927922+30.787608⋅7.8
Multiply 30.787608 by 7.8.
150.85927922+240.14334244
150.85927922+240.14334244
Add 150.85927922 and 240.14334244.
391.00262166
Find the Surface Area cylinder (7.8)(4.9)

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