Honors 10­5 surface area of cylinders.notebook
April 24, 2017
Honors 10-5
Goal: Students will find the surface area of cylinders
SA=LA + 2B
The base of a cylinder is a circle.
The lateral area is the circumference of the circle times
the height of the prism.
SA= ph + 2B
SA=Ch+ 2(base circles)
SA=πdh +2πr2
or
SA = 2πrh + 2πr2
1
Honors 10­5 surface area of cylinders.notebook
April 24, 2017
Find the exact surface area and the approximate
surface area.
20cm
4cm
10 cm
15cm
2
Honors 10­5 surface area of cylinders.notebook
April 24, 2017
A paper towel tube is 7 inches long and has a diameter of 2
inches. What is the amount of cardboard needed to make
the tube?
3
Honors 10­5 surface area of cylinders.notebook
April 24, 2017
If the surface area of a cylinder is 835.24 cm squared and the diameter of the cylinder is 14 cm. What is the height of the cylinder?
4
Honors 10­5 surface area of cylinders.notebook
April 24, 2017
5