If the lateral surface area of a cylinder is 91.2 cm and its height is 5 am, then find radius of its 1
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Latral area =94.2 cm
2
i) Height =5cm
94.2=(2πRH)
R=
2πH
94.2
π=3.14
R=
(2)(3.14)(5)
94.2
=
31.4/94.2
3 cm
ii) Volume =πR square H
=(31.4)(3 ka square)(5)
=(9)(5)(31.4)
=141.3 cm power3
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