Answer: Option C.
Step-by-step explanation:
The surface area of the right triangular will be the sum of all its faces.
You can observe in the figure that the faces of the right triangular prism are: Two equal right triangles and three different rectangles.
The formula for calculate the area of a triangle is:
[tex]A=\frac{bh}{2}[/tex]
Where "b" is the base and "h" is the height.
The formula for calculate the area of a rectangle is:
[tex]A=lw[/tex]
Where "l" is the length and "w" is the width.
Then, the surface area of the right triangular prism is:
[tex]SA=\frac{ba}{2}+\frac{ba}{2}+dc+db+da\\\\SA=2(\frac{ba}{2})+d(c+b+a)\\\\SA=2(\frac{4cm*3cm}{y})+8cm(5cm+4cm+3cm)\\\\SA=108cm^2[/tex]
