Answer:
area of sector = 282.74 yd²
length of arc = 47.12 yd
Explanation:
12 yd is the radius
area of a circle = πr²
area of sector = π12² × 225/360 = 90π yd² or 282.74 yd² (2dp)
circumference of circle = π × diameter
diameter = 12 × 2 = 24
length of arc = 225/360 × 24π = 15π yd or 47.12yds (2dp)