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8Math 12715.notebook December 07, 2015€¦ · Happy Birthday to Torrie Riley!! Today is National...

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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 homework Go over Pythagorean Theorem tests Notes on surface area of prisms Assignment 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 cm 2 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 Dec 77:09 AM The formula for lateral surface area is S = Ph where P = perimeter of the base and h = height of the prism. Dec 77:09 AM 4 cm 4 cm 8 cm 6 cm 6 cm 4 cm S = Ph
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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

Dec 7­7:09 AM

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.

Dec 7­7:10 AM

Example 2:  Find the lateral surface area of the prism. 

4 in.

4 in.

8 in.

Dec 7­7:10 AM

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.

Dec 7­7:15 AM

Example 4:  Find the total surface area of the prism. 

4 in.

4 in.

8 in.

Dec 7­7:26 AM

Example 5:  Find the total surface area of the object.

18 in.12 in.

15 in.


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