Answer:54.84cm
Step-by-step explanation:
π=3.14
Φ=60°
Radius=18°
Perimeter of sector=2 x radius + length of arc
Perimeter of sector=2 x radius + Φ/360 x 2 x π x radius
Perimeter of sector=2x18+60/360x2x3.14x18
Perimeter of sector=36+60/360x113.04
Perimeter of sector=36+(60x113.04)/360
Perimeter of sector=36+6782.4/360
Perimeter of sector=36+18.84
Perimeter of sector=54.84
