8th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer The ratio between the length and width of a field is 10 : 60 The area of the 3840 \[{{\mathbf{m}}^{\mathbf{2}}}\]. Find the difference between the length and width of the field.

    A)  32 m     

    B)  24 m          

    C)  20 m                           

    D)  18 m

    Correct Answer: A

    Solution :

    (a): Let the length and width be \[10x\]and 6x. \[\Rightarrow 10x\times x=3840\] \[\Rightarrow 60\times 2=3840\] \[\Rightarrow {{x}^{2}}=64\] \[\Rightarrow x=8.\] \[=10x-6x=4x=\]difference between length and width =32.


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