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Inessa05 [86]
4 years ago
8

Help please~

Mathematics
2 answers:
Stels [109]4 years ago
6 0
The answer is 2670.57 and yes im sure this is right i just finished my quiz! (Please make the answer the brainliest!)
Gnesinka [82]4 years ago
5 0

Answer:

2670.57 cm³

Step-by-step explanation:

The volume of a sphere is given by the formula

V = 4/3πr³

The diameter of the entire spherical object is 18 cm.  This makes the radius 18/2 = 9 cm.

This gives us the volume

V = 4/3(3.14)(9³) = 3052.08 cm³

The diameter of the core is 9 cm.  This makes the radius 9/2 = 4.5 cm.

This gives us the volume

V = 4/3(3.14)(4.5³) = 381.51 cm³

This makes the volume of the outer layer

3052.08-381.51 = 2670.57 cm³

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