Answer:
Step-by-step explanation:
The net of the triangular prims is attached.
Remember, the total surface area refers to the area of each face of the volumetric figure. In this case we have three equal rectangles and two equal triangles.
[tex]A_{1}=3(10 \times 14)=3(140)=420 \ u^{2}[/tex]
Remember that the area of a rectangle is just the product of its width and height.
[tex]A_{2}=2(\frac{1}{2} \times 12 \times 8 )=96 \ u^{2}[/tex]
The total surface area is given by the sum of all these areas:
[tex]S=420 + 96 = 516 \ u^{2}[/tex]
Therefore, the total surface area of the figure is 516 square units.
