SOLUTION: a pond 100 feet in diameter is surrounded by a circular grass walk 2 feet wide. how many square feet of grass are there on the walk ?

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Question 478728: a pond 100 feet in diameter is surrounded by a circular grass walk 2 feet wide. how many square feet of grass are there on the walk ?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
pond radius = 50
radius of pond +walk = 52
pi*(52^2-50^2) is the area of walk
= 642.88 ft^2