RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 20. Surface Area and Volume of a Right Circular Cone

Subject: Mathematics - Class 9th

Q. No. 5 of CCE - Formative Assessment

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5

The slant height of a cone is increased by 10%. If the radius remains the same, the curved surface area is increases by

Let radius of cone = r


Let slant height = x


Curved surface area =


New slant height =


New volume =


Increase in volume = =


Percentage increase in volume =

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