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    Question

    A cube has edge 13 m. Find its length of diagonal, surface area and volume.

    A 16√3, 1,175 sq. m, 2,644 mt cube Correct Answer Incorrect Answer
    B 18√3, 1,172 sq. m, 1744 mt cube Correct Answer Incorrect Answer
    C 13√3, 1,014 sq. m, 2197 mt cube Correct Answer Incorrect Answer
    D 10√3, 1,177 sq. m, 2,744 mt cube Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Length of diagonal= √( 3 ) a = √( 3 )× 13 = 13√3 Surface area= 6a² = 6 × 13 × 13= 1014m^(2,) Volume of a cube= a³= 13³ = 2197 m^3

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