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Two spherical balloons are filled with water. The first balloon has a radius of 3 cm, and the second has a radius of 6 cm.

How much more water is in the larger balloon than in the smaller balloon?
Use 3.14 to approximate pi, and express your answer in the hundredths.

cm3



Answer :

Ok so the volume of a sphere is V = (4[tex] \pi [/tex] r^3) / 3

So in the 3cm sphere the volume is V = 4 [tex] \pi [/tex] 27 / 3 --> V = 36 [tex] \pi [/tex]

and in the 6cm sphere: V = 4 [tex] \pi [/tex] 216 / 3 --> V = 288 [tex] \pi [/tex]

So it's 8 times bigger! (288 / 36 = 8)  

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