SOLUTION: The density of platinum is 21.5g/cm^3. If the ring shown in the figure below is crafted out of platinum, how much will it weigh?
h = 0.5 cm
r = 2 cm
0.15 cm
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Question 973255: The density of platinum is 21.5g/cm^3. If the ring shown in the figure below is crafted out of platinum, how much will it weigh?
h = 0.5 cm
r = 2 cm
0.15 cm
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
Assuming 0.15cm is the thickness, the volume will be
volume of the disk with outside radius (r) and thickness (h)
minus the the inner (empty) disk with radius (r-0.15cm) and
thickness h:
=volume of metal in ring
.
Mass=density x volume:
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