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2. Find the volume of the hemisphere with the radius of 3 inches. 

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quddoos | Valedictorian

Posted July 20, 2013 at 5:15 PM via web

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2. Find the volume of the hemisphere with the radius of 3 inches. 

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lfryerda | High School Teacher | (Level 2) Educator

Posted July 20, 2013 at 5:25 PM (Answer #1)

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If you have more than one question, you need to make separate posts.

The volume of a sphere is `V=4/3pir^3` , so the volume of half a sphere is `V=2/3pir^3` .

To find the volume of the hemisphere with radius 3 inches, substitute the value into the formula and simplify

`V=2/3 pi r^3`  sub in r=3

`=2/3pi 3^3`   cancel common factor of 3

`=2pi 3^2`  simplify

`=18pi`

The volume of the hemisphere is `V=18pi` cubic inches.

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