2. Questions Bank
  3. 7th Class
  4. Mathematics
  5. Mensuration

7th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer
    DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion: The length of a rectangular plot is 1.5 times its breadth 20% of its perimeter is 20 meters. The area of the plot is 600\[{{\text{m}}^{2}}\]. Reason: Area of rectangle is given as product of length and breadth.

    A) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

    B) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

    C) If Assertion is correct but Reason is incorrect.

    D) If Assertion is incorrect but Reason is correct.

    Correct Answer: A

    Solution :

        Assertion: \[l=1.5\,b\] \[\frac{20}{100}(l+b)=20\] \[\Rightarrow \]            \[l+b=50\] \[b=20,\,\,l=30\] Area\[=20\times 30=600\,c{{m}^{2}}.\] So, both Assertion and Reason are correct Reason is correct explanation for the Assertion


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