# 3/30 Take out paper and write the formula for a: Circumference Area Circle Area Parallelogram Area Triangle Area Regular Polygon Volume Rectangular Prism.

## Presentation on theme: "3/30 Take out paper and write the formula for a: Circumference Area Circle Area Parallelogram Area Triangle Area Regular Polygon Volume Rectangular Prism."— Presentation transcript:

3/30 Take out paper and write the formula for a: Circumference Area Circle Area Parallelogram Area Triangle Area Regular Polygon Volume Rectangular Prism

p is the perimeter of the base. Lateral Area = ph Surface Area = LA + 2B

Example 1: Find Surface Area of a Prism Lateral Area = php = 4+ 3 + 4 + 3 p = 14 h = 5 LA= (14)(5) LA = 70 B = (4)(3) B = 12 Surface Area = LA + 2B SA = 70 + 2(12) SA= 70 + 24 SA= 94 cm 2

Example 2: Find the surface area of the prism. Lateral Area = php = 4+ 3 + 5 p = 12 h = 6 LA= (12)(6) LA = 72 B = 6 Surface Area = LA + 2B SA = 72 + 2(6) SA= 72 + 12 SA= 84 cm 2 s

Example 3: Find the surface area of the cylinder r = 5 h = 12 LA= (10  )(12) LA = 120  B = 25  Surface Area = LA + 2B SA = 120  + 2(25  ) SA = 120  + 50  SA = 170  m 2 SA  534.07 m 2

11-2 Surface Area WS 1-16 all Packet 9: 9-58 to 9-61 all

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