Cylinder – Surface Area – Demonstration This resource provides animated demonstrations of the mathematical method. Check animations and delete slides not needed for your class.
Cylinders: Surface Area How many sides do these shapes have? What 2 D shapes are the sides? Sketch the packaging flat in your books. Lid Base
How can we calculate the surface area of this can/cylinder? What is the net of the cylinder? What is the area of the cylinder’s surfaces?
1) Label 2) Top 3) Bottom 5 cm Total Surface Area = 149. 23 cm 2 7 cm
3 cm 5 cm 1) 2) 3) 4) Sketch the net Add measurements Calculate the area of each shape Total the areas 5 cm Total Surface Area = 61. 26 cm 2
5 cm 2 cm 1) 2) 3) 4) Sketch the net Add measurements Calculate the area of each shape Total the areas Total Surface Area = 70. 69 cm 2
Example 3 cm Calculate the surface area of these prisms. Give you answers to 2 dp. A 4 cm 5 cm 3 cm 5 cm B 8 cm This is a half-cylinder Total Surface Area = 61. 26 cm 2 C 6 cm 5 cm
Example 3 cm Calculate the surface area of these prisms. Give you answers to 2 dp. A 4 cm SA = 87. 96 cm 2 5 cm 3 cm 5 cm B SA = 89. 54 cm 2 This is a half-cylinder C 6 cm SA = 96. 76 cm 2 Total Surface Area = 61. 26 cm 2 5 cm 8 cm
Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths. co. uk