# Find the Surface Area cylinder (9cm)(10cm) h=9cmr=10cm
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=10 and height h=9 into the formula. Pi π is approximately equal to 3.14.
2(π)(10)2+2(π)(10)(9)
Simplify each term.
Raise 10 to the power of 2.
2π⋅100+2(π)(10)(9)
Multiply 100 by 2.
200π+2(π)(10)(9)
Multiply 10 by 2.
200π+20π⋅9
Multiply 9 by 20.
200π+180π
200π+180π
Add 200π and 180π.
380π(cm)2
Find the Surface Area cylinder (9cm)(10cm)

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