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