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Banking Sample Paper SBI Clerk Grade (Main) Sample Test Paper-7

  • question_answer
    The area of a square is four times the area of a rectangle. The length of the rectangle is 25 cm and its breadth is one cm less than one-fifth of its length. What is the perimeter of the square?

    A)  40 cm.

    B)  60 cm.

    C)  160 cm.

    D)  Cannot be determined

    E)  None of these

    Correct Answer: E

    Solution :

          Breadth of rectangle \[=25\times \frac{1}{5}-1=4cm\] \[\therefore \]Area of rectangle = length \[\times \]breadth \[=25\times 4=100\]sq.cm. \[\therefore \]Area of square \[=4\times 100=400\]sq.cm. \[\therefore \]Side of square \[=\sqrt{400}=20\]cm. \[\therefore \]Perimeter of square \[=4\times \]side \[=4\times 20=80cm.\]


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