Surface Area = Area of the 2 triangles + Area of the โ€ฆ...A net for a right cone consists of a...

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Transcript of Surface Area = Area of the 2 triangles + Area of the โ€ฆ...A net for a right cone consists of a...

Surface Area= Area of the 2 triangles + Area of the 3 rectangles

Lateral Area= Area of the 3 rectangles

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Question 2, page 992

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S= (28cm)(12cm) + 2 (48๐’„๐’Ž๐Ÿ)S= 336 ๐’„๐’Ž๐Ÿ + 9๐Ÿ”๐’„๐’Ž๐Ÿ= 432๐’„๐’Ž๐Ÿ

OR

S= 2 (8)(6) + 2(6)(12)+ 2 (8)(12) S= ๐Ÿ—๐Ÿ” + ๐Ÿ๐Ÿ’๐Ÿ’ + ๐Ÿ๐Ÿ—๐Ÿ= 432๐’„๐’Ž๐Ÿ

Example 1 APage 993

Find the Surface Area

P = 10+24+26=60

B = ๐Ÿ

๐Ÿ(24)(10)= 120

S = (60)(20) + 2 (120)= 1200 + 240= 1440 ๐’Š๐’๐Ÿ

Example 1 BPage 993

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Example 2 A Page 995

ORSurface Area of a REGULAR PYRAMID

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Example 1 A, Page 1006

Example 1 B, Page 1006

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Example 3 A, Page 1008

Example 3 B, Page 1009

Example 4 A, Page 1010

Example 3Page 996