Respuesta :

FireandCreate

Answer:

area of a triangular face = ½(base)(side length) = ½(7)(11.5) = 40.25 in

lateral area = all four triangles = 161 in²

base area = 7² = 49 in²

 

total surface area = lateral area + base area = 161+49 = 210 in²

I hope this helps