8Math 12715.notebook
1
December 07, 2015
Dec 43:25 PM
Problem of the Day:Find the volume of the object.
Plan for the Day:Pass back homeworkGo over Pythagorean Theorem testsNotes on surface area of prismsAssignment
Happy Birthday to Torrie Riley!!Today is National Pearl Harbor Remembrance Day, National Cotton Candy Day, and International Civil Aviation Day!!
2 in.
Dec 79:17 AM
Dec 77:08 AM
Surface area sum of all the areas of all the surfaces on a solid
It is also the total area of the net of a solid
You can use a net or a formula to find the surface area of a shape.
Surface area is still an area because it does not have any thickness. Surface area is always given using square units (like cm2 or in.2).
Dec 77:08 AM
Lateral surface area the sum of the lateral surfaces (called faces or sides) of a solid
Total surface area the sum of the lateral surfaces and the area of the bases
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The formula for lateral surface area isS = Ph
where P = perimeter of the base and h = height of the prism.
Dec 77:09 AM
4 cm 4 cm
8 cm6 cm
6 cm
4 cm
S = Ph
8Math 12715.notebook
2
December 07, 2015
Dec 77:10 AM
Example 1: Find the lateral surface area of the prism.
8 in.
3 in.4 in.
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Example 2: Find the lateral surface area of the prism.
4 in.
4 in.
8 in.
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The formula to find the total surface area of a prism is
S = Ph + 2Bwhere P is the perimeter of the base, height is the height of the prism, and B is the area of the base
4 cm 4 cm
8 cm6 cm
6 cm
4 cm
Dec 77:10 AM
Example 3: Find the total surface area of the prism.
8 in.
3 in.4 in.
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Example 4: Find the total surface area of the prism.
4 in.
4 in.
8 in.
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Example 5: Find the total surface area of the object.
18 in.12 in.
15 in.