- The area of a sector is proportional to the angle of the sector relative to the full circle (360°). - Formula: Area of sector = $(\theta / 360°) \times \pi r^2$. - Use the value of $\pi = 22/7$ when dealing with fractions involving 7 in geometry problems.
For a given circle, the angle of a sector is 60°. If the area of this sector is 132/7 cm², what is the radius of the circle?
Asked in GPSC Prelims CSP 1 2018 · Topic: General Concept (Definition, Scope, and Branches of Geography)
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