Maximum possible area that can be enclos...

Maximum possible area that can be enclosed by a wire of length 20 cm by bending it in form of a circular sector is `10` b. `25` c. `30` d. `20`

A

`25 cm^2`

B

20 m

C

10 m

D

5 m

Text Solution

Verified by Experts

The correct Answer is:

A

l + 2r =40

Area is maximum when `l + 2r =20 rarr r =10`

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