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> Finding Surface Area of a Cylinder < you are here
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surface area of cylinders
Formula for Cylinder Surface Area is
A cylinder is a 3-dimensional shape that have two circular bases on
the opposite sides. The two circular sides are connected together
by a curve side. Cans are examples of cylinders.
cylinder shape
Cylinder shape
Cylinder shape
pi = 3.14
Example: Find the surface area of the cylinder above.
Formula
Step1: add the numbers in the parentheses
2 x 3.14 x 5 ( 5 + 10)
2 x 3.14 = 6.28
2 x 3.14 x 5 ( 15)
Step2: multiply from left to right
6.28 x 5 = 31.4 x ( 15) = 471 sq cm or 471 cm
2
r = radius
h = height
The raise 2 means square. Area is
measured in square units.