6th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer
    Find the values of P, Q, R and S.
    Length of rectangle (cm) Breadth of rectangle (cm) Area \[\text{(c}{{\text{m}}^{\text{2}}}\text{)}\] Perimeter (cm)
    25 P 300 Q
    18 R S 66

    A)
    P Q R S
    12 74 15 207

    B)
    P Q R S
    12 15 74 270

    C)
    P Q R S
    12 74 15 270

    D)
    P Q R S
    42 15 270 74

    Correct Answer: C

    Solution :

    \[\text{Area = 300 c}{{\text{m}}^{\text{2}}}\] \[\Rightarrow \text{ }25\times p=300\Rightarrow P=12\text{ }cm\] \[\therefore \] Perimeter\[=2(12+25)=74\text{ }cm\] So, \[\text{P=12, Q=74}\] Also, Perimeter = 66 \[\Rightarrow 2(18+R)=66\Rightarrow 18+R=33\] \[\Rightarrow \text{R}=15\text{ cm}\] and Area \[=S=15\times 18=270\text{ }c{{m}^{2}}\] \[\therefore \] R = 15 and S = 270


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