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CBSE Class 9 Answered

A tent is in the form of a cylinder surmounted by a hemisphere. The height and radius of the cylindrical portion is 7.2 cm and 4.2 cm respectively. Calculate its volume.
Asked by Topperlearning User | 24 Oct, 2017, 01:19: PM
answered-by-expert Expert Answer

Given: Radius of the cylindrical part = Radius of the hemispherical part (r) = 4.2 cm,

Height of the cylindrical portion (h) = 7.2 cm

Now, Total volume = volume of cylindrical part + volume of hemispherical part

 

begin mathsize 12px style straight V space equals space πr squared straight h space plus space 2 over 3 πr cubed straight V space equals space πr squared space open parentheses straight h plus 2 over 3 straight r close parentheses straight V space equals space 22 over 7 cross times 4.2 cross times 4.2 open parentheses 7.2 plus 2.8 close parentheses straight V space equals space 554.4 space cm cubed end style

Answered by | 24 Oct, 2017, 03:19: PM

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