Bell Ringer
TO FIND THE SURFACE AREAOF A CYLINDER:
SA= 2πr² + 2πrh Area of 2 circles + Circumference times height
EXAMPLEThis soup can has a diameter of 2.625 inchesand a height of 3.875 inches.
To find the Surface area and volume the soup can:
SA= 2πr² + 2πrh
Next use the formula to fine the Volume: (area of the base times height)V = Bh = πr²hV = 3.14 * 1.3125² * 3.875V = 20.96
Find the surface area and volume of a cylinder with a diameter of 15 feet and height of 20 feet.
Find the surface area and volume of a cylinder with a radius of 12 feet and height of 22 feet.
You Try: Find the surface area and volume
Diameter is 22 metersHeight is 53 meters
SA= 2πr² + 2πrh
V = Bh = πr²h
Surface Area and Volume of a Sphere
Example:SA = 4πr² V = V = 4/3 πr³
The radius of the Weather balloon is 3 feet
Surface Area and Volume of a Sphere
Example:SA = 4πr² V = 4/3 πr³
The radius of the ball is 23 cm.
You Try!
• Find the Surface Area and Volume of a Basketball with a radius of 50 cm.
• SA = 4πr² V = 4/3 πr³