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17 October, 18:09

A shipping tube is shaped like a triangular prism. The bases are equilateral triangles with edges of 5 inches and a height of 4.3 inches. The tube is 14 inches long. Find the total surface area of the shipping tube.

A: 253

B:231.5

C:221.75

D:161.5

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Answers (1)
  1. 17 October, 18:32
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    4.3*5 - area of 1 triangle

    4.3*5*2 - area of 2 triangles

    = 43

    5*14 - area of 1 rectangle

    5*14*3 - area of 3 rectangles

    = 210

    210+43 = 253
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