A cylinder has a diameter of 20 cm. The area of curved surface is 100 . Find:
i) The height of the cylinder
ii) The volume of the cylinder
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A cylinder has a diameter of 20 cm. The area of curved surface is 100 . Find:
i) The height of the cylinder
ii) The volume of the cylinder
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Answer:
Given: Diameter of cylinder =20 cm
Thus radius of the cylinder (r)=
2
20
=10 cm
Let, height of the cylinder =h cm
Given: Area of the curved surface area =100 cm
2
Therefore, 2πrh=100
⇒2×
7
22
×10×h=100
⇒h=
2×220
100×7
=1.59 cm =1.6 cm (corrected to one decimal place)