Correct Answer: Option B

Explanation

Area of a sector = \(\frac{\theta}{360}\times \pi r^2\)

55 = \(\frac{\theta}{360}\times \frac{22}{7}\times \frac{10\times 10}{1}\)

\(\theta = \frac{360 \times 55 \times 7}{22 \times 10 \times 10}\)

\(\theta = 63^{\circ}\)

There is an explanation video available below.

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