Parts of a Cylinder :
The radius of the cylinder is the radius of the base.
The height of the cylinder is the perpendicular distance between the bases. Parts of a Cylinder Height h base radius base Lateral
surface
Slide 3:
Surface area = 2 (area of base) + (circumference of base) (height)
Symbols S = 2 B + Ch
= 2 π r² + 2 πr h
B = π r²
C = 2 π r How to find the surface area of a cylinder? r h
Slide 4:
Example Problem 3 ft. 4 ft. Find the surface area of the cylinder. Round your answer to the nearest whole number. Solution: S= 2 π r² + 2 πr h
= 2 π (3)² + 2 π (3)(4)
= 18 π + 24 π
= 42 π
= 132 The surface area is about 132 square feet.
Slide 5:
Practice Problems Find surface area of the following cylinders.
Round answer to nearest whole number 10 ft. 12 ft. 1. 2. 3 in. 5 in. 3. 2m 1 m