Respuesta :

choixongdong
Area of circle = π r^2 = π (18)^2  = 324 π 
give 60 degrees so 
5/6 of circle = 324 π x 5/6 = 270π

Area of Equilateral triangle = √3/4 (a^2)
= √3/4 (18^2)
= √3/4 (324)
= 81√3

so
area of shaded = 270π + 81√3

answer

D. 270π + 81√3 m^2