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What is the area of a sector of a circle of radius 7 cm and central angle 270°? |
115.5 cm2 215.5 cm2 105.5 cm2 125.5 cm2 |
115.5 cm2 |
Area of sector = \(\frac{θ°}{360°}\) \(\pi \) r2 = \(\frac{270°}{360°}\) × \(\frac{22}{7}\) × 7 × 7 = \(\frac{3}{4}\) × \(\frac{22}{7}\) × 7 × 7 = 115.5 cm2 |
