Question

The perimeter of a sector of a circle of radius 5.7 cm is 27.2 cm .
Find the area of the sector.

Answer 1

Answer:

l/2(r)

27.2

____(5.7)

2

:.13.6(5.7)

=77.52

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Answer 2

$\bf \: ↑↑ Solution \: is \: on \: Attachment ↑↑$

$\fcolorbox{black}{pink}{Formula used on solving your question are :-}$

$\sf \: Perimeter \: of \: sector = \bf2r + l \sf = 2r + \: \frac{\theta}{360 \degree} \times 2\pi r$

$\sf \: Area \: of \: sector = \: \frac { \theta}{360 \degree} \times \pi r {}^{2} = \frac{1}{2} \times \frac{ \theta}{360 \degree} \times 2\pi r \times r = \frac{1}{2} \: lr$