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11.3 9 9 9 7.8 surface area of triangular prism

113 9 9 9 78 Surface Area Of Triangular Prism class=

Sagot :

Answer:

Total area = 187.65 cm^2

Step-by-step explanation:

AREA of a triangle = 1/2 base * height

THREE sides    3     * 1/2 *9 *  11.3  = 152.55 cm^2

Bottom                       1/2 * 9 * 7.8  = 35.1 cm^2

  total = 187.65  cm^2

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