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7th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer
    The difference between the length and breadth of a rectangle is 23 m. If the perimeter is 206 m then the area is

    A)  \[1520\,{{m}^{2}}\]           

    B)  \[2520\,{{m}^{2}}\]

    C)  \[2420\,{{m}^{2}}\]           

    D) None of these

    Correct Answer: B

    Solution :

        Let breadth\[=x.\] Length\[=x+23.\] Perimeter\[=206\,m.\] \[2\left( x+23+x \right)=206\] \[\therefore \]    \[2x+23=103\]             \[x=40\] Area\[=1\times b=63\times 40=2520\,{{m}^{2}}.\]


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