Question

.Find the area of sector of angle 1200 and radius 18 cm.​

Answer 1

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$Given, \\ angle \: = {120}^{o} \\ radius \: = 18 \: cm \\ \\ To \: find,\\ area \: of \: sector \: = \:?\\ \\So,\\ Area \: of \: sector \: = \frac{120}{360} \times \frac{22}{7} \times ( {r})^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{120}{360} \times \frac{22}{7} \times ({18})^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{120}{360} \times \frac{22}{7} \times 18 \times 18 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{855360}{2520} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 339.42857\:{cm}^2$

Answer 2

Answer:

   339.4 cm²

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