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What is the area of a sector of a circle of radius 28 cm and central angle 180°? |
1242 cm2 1236 cm2 1232 cm2 2232 cm2 |
1232 cm2 |
Area of sector = \(\frac{θ°}{360°}\) \(\pi \) r2 = \(\frac{180°}{360°}\) × \(\frac{22}{7}\) × 28 × 28 = \(\frac{1}{2}\) × \(\frac{22}{7}\) × 28 × 28 = 1232 cm2 |
