SOLUTION: A sprinkler can water an area of 121π sq. feet if it rotates 360°. If a gardener sets the sprinkler so that it rotates only 80°, how much fencing is needed to enclose the area
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Question 944708: A sprinkler can water an area of 121π sq. feet if it rotates 360°. If a gardener sets the sprinkler so that it rotates only 80°, how much fencing is needed to enclose the area that the sprinkler will water?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Fence needed for two radii and the arc corresponding to 80 degrees.
The arc length,
Total fence needed is .
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