Answer:
99 cm^2
Step-by-step explanation:
To find surface area, lets count the surface of this model.
There are 5 surface in this model: 2 triangle and 3 square
The area of triangle= 0.5* height * base
Area of square= side *side
So lets add up the surface area of the surface
2(0.5*4*6) + 3(5*5)= 99cm^2
