Volume of ball

Find the volume of a volleyball that has a radius of 4 1/2 decimeters. Use 22/7 for π

Correct result:

V =  381.8571 dm3

Solution:

r=4+12=92=4.5 dm  V=43πr3  V=43⋅ 227⋅ r3=43⋅ 227⋅ 4.53=26737=381.8571 dm3

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