Multiple Choice Questions on A rectangular paper of 44 cm long and 6 cm wide is rolled to form a cylinder of height equal to widt........... for CDS Exam Preparation

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Multiple Choice Questions

A rectangular paper of 44 cm long and 6 cm wide is rolled to form a cylinder of height equal to widt...........

Quantitative Aptitude (CDS) Mensuration 3D
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    A rectangular paper of 44 cm long and 6 cm wide is rolled to form a cylinder of height equal to width of the paper. The radius of the base of the cylinder so rolled is

    3.5 cm

    Incorrect Answer

    5 cm

    Incorrect Answer

    7 cm

    Correct Answer

    14 cm

    Incorrect Answer
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    Explanation:

    Let r be the radius of the base of the cylinder.
    Therefore, circumference of the base of the cylinder = 44 cm
    ⇒2×22/7×r=44⇒r=7cm

    2πr=44⇒r=(44 x 7)/(22 x 2)
    r=7cm

    By: Munesh Kumari
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