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10th Class Mathematics Related to Competitive Exam Question Bank Algebra

  • question_answer
    The perimeter of a rectangle whose length is twice the breadth is 24 cm. Then the area of the rectangle is

    A)  28 sq. cm        

    B)         32 sq. cm  

    C)  36 sq. cm        

    D)         42 sq. cm

    Correct Answer: B

    Solution :

     Let the width be\[x\], then length\[=2x\] \[\therefore \]  Perimeter\[=x+2x+x+2x=24\] \[\Rightarrow \]               \[x=4\] Hence   width \[=4\] and length \[=8\] Required area \[=8\times 4=32\,\,sq.cm\].


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