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22. Mensuration-III (Surface Area and Volume of a Right Circular Cylin
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Q1 of 62 Page 22

Find the curved surface area dna total surface area of a cylinder, the diameter of whose base is 7 cm and height is 60 cm.

Given,


Diameter of cylinder = 7 cm


Height of cylinder = 60 cm


So,


Radius of cylinder =


Curved surface area of cylinder = 2πrh =


Total surface area of cylinder =


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2

The curved surface area of a cylindrical road is 132 cm2. Find its length if the radius is 0.35 cm.

3

The area of the base of a right circular cylinder is 616 cm2 and its height is 2.5 cm. Find the curved surface area of the cylinder.

4

The circumference of the base of a cylinder is 88 cm and its height is 15 cm. Find its curved surface area and total surface area.

5

A rectangular strip 25 cm× 7 cm is rotated about the longer side. Find the total surface area of the solid thus generated.

Questions · 62
22. Mensuration-III (Surface Area and Volume of a Right Circular Cylin
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