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Surface Area

Surface Area. Rectangular Prism. The surface area S.A. of a rectangular prism with base l, width w, and height h is the sum of the areas of its faces. S.A. = 2lh + 2lw + 2hw. Practice Problem 1. Find the surface area of the rectangular prism shown to the right. Triangular Prism.

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Surface Area

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  1. Surface Area

  2. Rectangular Prism The surface area S.A. of a rectangular prism with base l, width w, and height h is the sum of the areas of its faces. S.A. = 2lh + 2lw + 2hw

  3. Practice Problem 1 • Find the surface area of the rectangular prism shown to the right.

  4. Triangular Prism • To find the surface area of a triangular prism, it is more efficient to find the area of each face and calculate the sum of all of the faces.

  5. Practice Problem 2 • Find the surface area of the triangular prism shown to the right. • Find the area of each shape and add. Area of the triangles Area of rectangle 1 Area of rectangle 2 Area of rectangle 3

  6. Surface Area of a Cylinder • The surface area S.A. of a cylinder with height h and radius r is the area of the two bases plus the area of the curved surface (parallelogram).

  7. Practice Problem • Find the surface area of the cylinder. Round your answers to the nearest hundredth.

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