Respuesta :

Answer:

area of base= 64mm2

area of each triangle = 48 mm2

surface area of each bead = 256 mm2

Step-by-step explanation:

area of base : 8 × 8 = 64

area of each triangles : 12 × 8 / 2 = 48

the surface area of each bead : 48 × 4 + 64 = 256