मराठी

The Area of the Curved Surface of a Cone is 60 Cm2. If the Slant Height of the Cone Be 8 Cm, Find the Radius of the Base? - Mathematics

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प्रश्न

The area of the curved surface of a cone is 60 cm2. If the slant height of the cone be 8 cm, find the radius of the base? 

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उत्तर

Given that  

Curved surface area of cone =` 60picm^2` 

∴ Slant height of cone (l) = 8cm 

i.e , `pirl=60pi` 

⇒ `pixxrxx8=60pi`

⇒` r=60/8=7.5` 

∴ Radius of cone = 7.5cm 

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 20: Surface Areas and Volume of A Right Circular Cone - Exercise 20.1 [पृष्ठ ८]

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आरडी शर्मा Mathematics [English] Class 9
पाठ 20 Surface Areas and Volume of A Right Circular Cone
Exercise 20.1 | Q 8 | पृष्ठ ८
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