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Sagot :
Calulate Cylinder Volume: remember; Vcyl = 3.14(r)2h
Vcyl = 3.14 (45mm)2 600 mm
Vcyl = 3.14 (2025mm2) 600mm Vcyl = 3815100 mm3 or 3.8 x106 mm3
Next calculate the percentage of volume taken up by styrofoam balls
3815100 x 20/100 = 763020 Vstyroballvol = 763020mm3
{as a check calculate}
80% 3815100 x 80/100 = 3052080 mm3
20% 3815100 x 20/100 = 763020 mm3
100% = 80% + 20% = 3815100 mm3
Now calculate the Volume of the Sphere: Vsphere = 4/3*3.14*(r)3
Vsp = 4/3*3.14*(15mm)3 Vsp = 4/3*3.14*(3375) Vsp = 14130 mm3
for 1 stryofoam ball
Lastly divide the amount of 20% vol of cylinder by one ball volume
763020mm3 / 14130mm3
= 54 styrofoam balls will fill or are in the tube. Answer
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