A flower-bed in the form of a sector has been fenced by a wire of 40m length. If the flower-bed has the greatest possible area, then what is the radius of the sector?

A flower-bed in the form of a sector has been fenced by a wire of 40m

1.	A flower-bed in the form of a sector has been fenced by a wire of 40m length. If the flower-bed has the greatest possible area, then what is the radius of the sector?
A.	25 m
B.	20 m
C.	10 m
D.	5 m
Answer» D. 5 m

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A flower-bed in the form of a sector has been fenced by a wire of 40m length. If the flower-bed has the greatest possible area, then what is the radius of the sector?

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