SOLUTION: Find the perimeter of a pool ball rack if each ball's radius is "r". Each ball is tangent to each other and exterior balls are tangent to the rack.
I don't understand how to sol
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-> SOLUTION: Find the perimeter of a pool ball rack if each ball's radius is "r". Each ball is tangent to each other and exterior balls are tangent to the rack.
I don't understand how to sol
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Question 734803: Find the perimeter of a pool ball rack if each ball's radius is "r". Each ball is tangent to each other and exterior balls are tangent to the rack.
I don't understand how to solve it. There would be 10 radii across but how do you find the arcs? Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! we want the perimeter of the pool ball rack, note that exterior balls are tangent to the rack, draw line through the center of the balls parallel to the sides of the rack
the perimeter is given by
P of rack = 15*2r = 30r where r is the radius of a ball
