# Find the Surface Area cylinder (9in)(5in)

h=9inr=5in
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=5 and height h=9 into the formula. Pi π is approximately equal to 3.14.
2(π)(5)2+2(π)(5)(9)
Simplify each term.
Raise 5 to the power of 2.
2π⋅25+2(π)(5)(9)
Multiply 25 by 2.
50π+2(π)(5)(9)
Multiply 5 by 2.
50π+10π⋅9
Multiply 9 by 10.
50π+90π
50π+90π