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find the following measurements to the nearest tenth 

a.) radius of a sphere with a volume of 330cm cubed 

 

b.)  the radius of a cone with a height of 3m and a volume of 30m cubes 

 Jan 23, 2019
 #1
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330 = (4/3) pi *radius^3       multiply both sides by  3/4

 

330 * 3/4 =  pi * radius^3      divide both sides by pi

 

(247.5) / pi  = radius^3         take the cube root

 

radius ≈   4.29 cm

 

 

30 = (1/3)  pi  radius^2 * 3

 

30 = pi * radius^2              divide both sides by pi

 

30 / pi  = radius^2         take the square root

 

radius   ≈ 3.09 m

 

 

 

cool cool cool

 Jan 23, 2019

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