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: If the area of a square with side 'a' is equal to the area of a triangle with base 'a', than the altitude of the triangle is 'a'. Reason: The area of a circle of radius 5 cm is numerically 250 percent of its circumference.

    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: D

    Solution :

        Assertion is incorrect and Reason is correct Assertion: \[a\times a=\frac{1}{2}\times a\times h\] \[\Rightarrow h=2a\] Reason: \[\frac{25\pi }{10\pi }=\]Required % \[\Rightarrow \frac{25\times 100}{10}=250\]Required percent


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