8th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer A conical tent is of diameter 12m at the base and its height is 8m. Find the area of the canvas (in\[{{m}^{2}}\]) required to make the tent.

    A)  188.57 m   

    B)  288 m          

    C)  400 m                         

    D)  500 m

    Correct Answer: A

    Solution :

    (a): area of canvas \[=\pi rl=n\pi \sqrt{{{r}^{2}}+{{h}^{2}}}\] \[=\frac{22}{7}\times 6\times \sqrt{{{6}^{2}}+{{8}^{2}}}=\frac{22}{7}\times 6\times 10=188.57m.\]

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