The length of the perimeter of a sector ...

The length of the perimeter of a sector of a circle is 20 cm, the maximum area of the sector is a)`30cm^2` b)`20cm^2` c)`40cm^2` d)`25cm^2`

A

`30cm^2`

B

`20cm^2`

C

`40cm^2`

D

`25cm^2`

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The correct Answer is:

D

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