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Mathematics
20. Surface Area and Volume of a Right Circular Cone
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Q6 of 63 Page 21

Find the curved surface area of a cone with base radius 5.25 cm and slant height 10 cm.

Given,


Base radius of cone (r )= 5.25 cm


Slant height of cone ( l )= 10 cm


∴ Curved surface area =πrl


= ×5.25×10 cm2=165 cm2


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The height of a cone is 21 cm. Find the area of the base if the slant height is 28 cm.

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Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m.

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Questions · 63
20. Surface Area and Volume of a Right Circular Cone
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