SOLUTION: It's laundry time again, and you have a roll of $10 worth of quarters to take to the Wash-'n-Whirl. Each US quarter has width of 1.75 mm and a radius of 12 mm. What is the volume o
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Question 624552: It's laundry time again, and you have a roll of $10 worth of quarters to take to the Wash-'n-Whirl. Each US quarter has width of 1.75 mm and a radius of 12 mm. What is the volume of the roll of quarters?
The total height of the stack of quarters is h = 40*1.75 = 70 mm
The volume is then...
V = pi*r^2*h
V = pi*12^2*70
V = 10080pi << ------- Exact Volume
V = 10080(3.14159)
V = 31667.2272 << ------- Approximate Volume
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