Question

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Answer 1

its c

Explanation:

Answer 2

Answer: Option C.

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:

`A=(bh)/(2)`

Where "b" is the base and "h" is the height.

The formula for calculate the area of a rectangle is:

`A=lw`

Where "l" is the length and "w" is the width.

Then, the surface area of the right triangular prism is:

`SA=(ba)/(2)+(ba)/(2)+dc+db+da\\\\SA=2((ba)/(2))+d(c+b+a)\\\\SA=2((4cm*3cm)/(y))+8cm(5cm+4cm+3cm)\\\\SA=108cm^2`