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In this video, you will learn how to find the surface area of rectangular prisms, by analyzing the prism’s six faces and computing their areas.

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area of a rectangle – computed by multiplying length times width (A = L x W)

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rectangular prism – a 3D solid with six faces that are rectangles

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surface area – the sum of the areas of the faces of a 3D solid

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2 small faces

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2 medium faces

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2 large faces

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Surface Area of a Rectangular Prism = Sm. Rec + Sm. Rec + Med. Rec + Med. Rec + Lg. Rec + Lg. Rec

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Rec Prism SA = 2(Sm. Rec) + 2(Med. Rec) + 2(Lg. Rec) Rec Prism SA = 2(L x W) + 2(L x W) + 2(L x W) Rec Prism SA = 2(3 x 6) + 2(3 x 8) + 2(6 x 8) Rec Prism SA = 2(18) + 2(24) + 2(48) Rec Prism SA = 36 + 48 + 96 8 in 3 in 6 in

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Rec Prism SA = 2(Sm. Rec) + 2(Med. Rec) + 2(Lg. Rec) Rec Prism SA = 2(L x W) + 2(L x W) + 2(L x W) Rec Prism SA = 2(3 x 6) + 2(3 x 8) + 2(6 x 8) Rec Prism SA = 2(18) + 2(24) + 2(48) Rec Prism SA = 36 + 48 + 96 8 in 3 in 6 in

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Rec Prism SA = 2(Sm. Rec) + 2(Med. Rec) + 2(Lg. Rec) Rec Prism SA = 2(L x W) + 2(L x W) + 2(L x W) Rec Prism SA = 2(3 x 6) + 2(3 x 8) + 2(6 x 8) Rec Prism SA = 2(18) + 2(24) + 2(48) Rec Prism SA = 36 + 48 + 96 8 in 3 in 6 in

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Rec Prism SA = 2(Sm. Rec) + 2(Med. Rec) + 2(Lg. Rec) Rec Prism SA = 2(L x W) + 2(L x W) + 2(L x W) Rec Prism SA = 2(3 x 6) + 2(3 x 8) + 2(6 x 8) Rec Prism SA = 2(18) + 2(24) + 2(48) Rec Prism SA = 36 + 48 + 96 8 in 3 in 6 in

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Rec Prism SA = 2(Sm. Rec) + 2(Med. Rec) + 2(Lg. Rec) Rec Prism SA = 2(L x W) + 2(L x W) + 2(L x W) Rec Prism SA = 2(3 x 6) + 2(3 x 8) + 2(6 x 8) Rec Prism SA = 2(18) + 2(24) + 2(48) Rec Prism SA = 36 + 48 + 96 8 in 3 in 6 in

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Rec Prism SA = 2(Sm. Rec) + 2(Med. Rec) + 2(Lg. Rec) Rec Prism SA = 2(L x W) + 2(L x W) + 2(L x W) Rec Prism SA = 2(3 x 6) + 2(3 x 8) + 2(6 x 8) Rec Prism SA = 2(18) + 2(24) + 2(48) Rec Prism SA = 36 + 48 + 96 8 in 3 in 6 in

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Rec Prism SA = 2(Sm. Rec) + 2(Med. Rec) + 2(Lg. Rec) Rec Prism SA = 2(L x W) + 2(L x W) + 2(L x W) Rec Prism SA = 2(3 x 6) + 2(3 x 8) + 2(6 x 8) Rec Prism SA = 2(18) + 2(24) + 2(48) Rec Prism SA = 36 + 48 + 96 8 in 3 in 6 in

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Rec Prism SA = 2(Sm. Rec) + 2(Med. Rec) + 2(Lg. Rec) Rec Prism SA = 2(L x W) + 2(L x W) + 2(L x W) Rec Prism SA = 2(3 x 6) + 2(3 x 8) + 2(6 x 8) Rec Prism SA = 2(18) + 2(24) + 2(48) Rec Prism SA = 36 + 48 + 96 8 in 3 in 6 in

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Rec Prism SA = 2(Sm. Rec) + 2(Med. Rec) + 2(Lg. Rec) Rec Prism SA = 2(L x W) + 2(L x W) + 2(L x W) Rec Prism SA = 2(3 x 6) + 2(3 x 8) + 2(6 x 8) Rec Prism SA = 2(18) + 2(24) + 2(48) Rec Prism SA = 36 + 48 + 96 8 in 3 in 6 in

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In this video, you learned how to find the surface area of rectangular prisms, by analyzing the prism’s six faces and computing their areas.

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