Question

20 meters of wire is available for fancing
off a flower-bed in the form of a circular
sector of radius 5 meters, then the
maximum area (in sq. m.) of the flower-
bed is
A) 15
B) 20
C) 25
D) 30​

Answer 1

The curved part of the sector has length $20 - 5 - 5 = 10$. The whole circle that the sector is part of has perimeter $10\pi$. So, we have:

$\frac{\pi \cdot 5^2}{\pi}=\boxed{25, C}$

Answer 2

Step-by-step explanation:

The curved part of the sector has length 20 - 5 - 5 = 1020−5−5=10 . The whole circle that the sector is part of has perimeter 10\pi10π . So, we have:

\frac{\pi \cdot 5^2}{\pi}=\boxed{25, C}

π

π⋅5

2

=

25,C