Respuesta :

area of base = 15.48
49.77 per each triangle (there are 5 triangles) so (5 X 49.77 = 248.85)
then you add 15.48 + 248.85 = 264.33
the surface area in 264.33 (that is what I have found)

Answer:

The answer is c

Hope this helps :)

Step-by-step explanation: