Question

A right rectangular prism and its net are shown below.

Answer 1

A = 5

B = 4

C = 8

D = 3

Explanation:

This is more of a visual calculation so I can't really explain much about it other than that you match up the side in the prism with the side in the net

Answer 2

Answer: 108

Explanation:

If you turn the shape, where the pointy side of the ramp is facing you and you flipped it open and laid out the sides, that's the "net" image on right

A = 5 the long side of that triangle is also the short side of that rectangle

B = 3 it's the short side of the triangle

C = 8 long part of the rectangle

D = 4 long side of triangle

To find surface area. Find the area of each of the shapes and add it all up

Top Rectangle:

A=Lw=C*A = 5*8 = 40

Middle Rectangle:

A=Lw = B*C = 3*8 = 24

Bottom Rectangle:

A=LW = 4*C = 4*8=32

Triangles are same

A=1/2 bh = 1/2 D*B = 1/2 * 4* 3 =6

But there are 2 of them so A=12

Now add all the shapes together

A(total)=40+24+32+12=108