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**Surface Area of Prisms and Cylinders**

Chapter 8 Section 8

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Using a Net What is a net? A two-dimensional pattern that you can fold to make a three-dimensional figure. Let’s Look

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Surface Area Definition: the sum of the areas of the faces of a shape.

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**Surface Area of a Triangular Prism**

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**Surface Area of a Triangular Prism #2**

9in 6in 4in 7in

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**Warm-Up 48 ft2 Find the total surface area of this shape 5ft 4ft 3ft**

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**Formula for Area of Triangular Prism: SA = wh + lw + lh + ls**

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**Formula for Surface Area of Triangular Prism: SA = wh + lw + lh + ls**

Find the surface area of a triangular prism with the following dimensions: w = 10cm l = 6cm h = 8cm s = 5cm

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**Formula for Surface Area of Triangular Prism: SA = wh + lw + lh + ls**

Find the surface area of a triangular prism with the following dimensions: w = 3in l = 4in h = 6in s = 2in

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**Surface Area of a Rectangular Prism**

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**Surface Area of a Rectangular Prism # 2**

5in 6in 5in

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Warm-Up Find the total surface area of this shape 5m 5m 5m

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**Warm-Up 150 m2 Find the total surface area of this shape 5m 5m 5m 25m2**

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Warm-Up Find the total surface area of this shape 10ft 3ft 5ft

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**Warm-Up 190 ft2 Find the total surface area of this shape 10ft 5ft 3ft**

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**Surface Area of a Rectangular Prism = 2(wh + lh + lw)**

Find the surface area: w = 3in l = 4in h = 6in

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**Surface Area of a Rectangular Prism = 2(wh + lh + lw)**

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**Surface Area of a Cylinder: SA: 2 𝝅 𝒓 𝟐 + 𝝅𝒅𝒉**

In other words: Area of the circle (there are two circles). Area of rectange length × width (height) × (cirumference)

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**Surface Area of Cylinders**

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**Surface Area of Cylinders**

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Warm-Up Find the total surface area of this shape in2 6in 10in

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**Warm-Up 244.92 in2 Find the total surface area of this shape 10in 6in**

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**Surface Area of a Cylinder: SA: 2 𝝅 𝒓 𝟐 + 𝝅𝒅𝒉**

Find the surface area of the cylinder: h = 12in d = 6in

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**Surface Area of a Cylinder: SA: 2 𝝅 𝒓 𝟐 + 𝝅𝒅𝒉**

Find the surface area of the cylinder: h = 8cm d = 4cm

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**Quick Check (I’m collecting this!!)**

Pg. 445 in book Numbers 5, 7, 15 NO HOMEWORK!

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Surface Area If you remove the surface from a three-dimensional figure and lay it out flat, the pattern you make is called a net. Nets allow you to see.

Surface Area If you remove the surface from a three-dimensional figure and lay it out flat, the pattern you make is called a net. Nets allow you to see.

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