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# Find the Curved Surface Area of a Cone with Base Radius 5.25 Cm and Slant Height 10cm. - CBSE Class 9 - Mathematics

ConceptSurface Area of a Right Circular Cone

#### Question

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

#### Solution

Given that,
Radius of a base of a cone = 5.25 cm

Slant height of cone=10 cm

Curved surface area of cone= pirl

=22/7xx5.25xx10cm^2

 =(22xx0.75xx10)cm^2

= 165 cm^2

Thus, the curved surface area of a cone is  165cm^2

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#### APPEARS IN

RD Sharma Solution for Mathematics for Class 9 by R D Sharma (2018-19 Session) (2018 to Current)
Chapter 20: Surface Areas and Volume of A Right Circular Cone
Ex.20.10 | Q: 6 | Page no. 7
Solution Find the Curved Surface Area of a Cone with Base Radius 5.25 Cm and Slant Height 10cm. Concept: Surface Area of a Right Circular Cone.
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