Question

the circumference circle is 88cm.find the area of sector whose central angle is 72⁰​

Answer 1

Answer:

123.2 cm^2

Step-by-step explanation:

radius is 14 cm

then applying formula

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Answer 2

Cirumference = 88cm

$\: \: \: \: \: 2\pi \: r = 88 \\ = >r = \frac{88}{2\pi} = 14cm$

Area of the sector =

$\: \: \: \: \: \: \: \frac{72}{360} \times \pi {r}^{2} \\ = > \frac{1}{5} \times \frac{22}{7} \times 14 \times 14 \\ = > \frac{616}{5} cm$