Answer:
194.68
Step-by-step explanation:
Surface area of a cylinder
Definition: The number of square units it takes to exactly cover the surface of a cylinder. Given by the formula:
area = 2 π r 2 + 2 π r h
where:
π is Pi, approximately 3.142
r is the radius of the cylinder
h height of the cylinder
Try this Drag the orange dot to resize the cylinder, note how the area is calculated.
See also: Volume of a cylinder
The surface area of a cylinder can be found by breaking it down into three parts:
The two circles that make up the ends of the cylinder.
The side of the cylinder, which when "unrolled" is a rectangle
Combining these parts we get the formula:
area = 2 π r 2 + 2 π r h
where:
π is Pi, approximately 3.142
r is the radius of the cylinder
h height of the cylinder
This should help you for next time.