Circumference =2π× radius
So the radius = the circumference of the circle ÷2π(π is 3. 14).
R =18.84 ÷ 6.28 = 3cm
So the area of three sectors = (sum of internal angles of sectors ÷ 360) × area of circle = (270 ÷ 360 )× 3? ×3. 14 = 2 1. 195 cm2
The answer is 2 1. 195 square centimeters. This question tests students' ability to sum the internal angles of quadrilateral, the formula of pi, the formula of circle area and image processing.
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