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A spherical object has a diameter of 18 cm. It has a spherical inner core with a diameter of 9 cm. What is the volume of the outer layer?
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A spherical object has a diameter of 18 cm. It has a spherical inner core with a diameter of 9 cm. What is the volume of the outer layer?
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Mar 21, 2018
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A spherical object has a diameter of 18 cm. It has a spherical inner core with a diameter of 9 cm. What is the volume of the outer layer?
Mathematics
middle-school
Greg Demetrick
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We do as follows:
[Entire sphere] - [Inner sphere] = Outer layer
radius of Entire sphere = 9 cm
radius of Inner sphere = 4.5 cm
[(4/3)(3.14)(9)^3] - [(4/3)(3.14)(4.5)^3]
= (3052.08) - (381.51)
= 2670.57 cubic centimeters
TheChumpus
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Mar 26, 2018
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TheChumpus
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