8th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer Find the surface area of a cuboid whose dimensions are 25m, 10m and 2 m.

    A)  610 \[{{m}^{2}}\]                  

    B)  640 \[{{m}^{2}}\] 

    C)  650 \[{{m}^{2}}\]                  

    D)  620 \[{{m}^{2}}\]

    Correct Answer: B

    Solution :

    (b): surface area \[=2\left( lb+bh+lh \right)\] \[=2\left( 25\times 10+10\times 2+25\times 2 \right)\] \[=2\left( 250+20+50 \right)\] = 640


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