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Q. 75.0( 3 Votes )

If the radius of a cone is 60 cm and its curved surface area is 23.55 m², then find its slant height. (π = 3.14)

Class 10th Gujarat Board Mathematics 14. Surface Areas and Volumes

Answer :

Given.

The radius of a cone is 60 cm

Curved surface area is 23.55 m²

Formula used/Theory.

CSA of cone = πrl

Radius is in cm but area is given in m²

Then convert radius into m

Radius = m = 0.6m

23.55 m² = 3.14 × 0.6 × l

L × 1.884 m = 23.55 m²

L = = 12.5 m

∴ The slant height of cone is 12.5 m

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