Respuesta :

isaiahelliott

Answer:

D

Step-by-step explanation:

12792193

D; surface area= 44.975 m²

Step-by-step explanation:

formula=Area of the base  =  (√3/4)a2

Area of each side wall  =  (1/2)ah

Area of all 3 side walls  =  3 x (1/2)ah  =  (3/2)ah