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Mathematics 12 Online
OpenStudy (anonymous):

A roof of the house including its base is in the shape of right prism with a triangular base with the dimensions of h=6.9, 14 by 8 by 8 by 8 by 8. What is the approximate surface area of this prism? a. 198 b. 240 c. 391.2 d. 408.9

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