Find the surface are of the right triangle prism. PLZ HELP

The answer to your question is Area = 144 u²

Step-by-step explanation:

Process

Area of a rectangle

A = base x heigth

Area of a rectangle

A = (base x height)/2

1.- Calculate the area of the rectangles

1st triangle to the left = 3 x 11 = 33 u²

2nd triangle                = 4 x 11 = 44 u²

3rd triangle                 = 5 x 11 = 55 u²

2.- Calculate the area of the triangles

area = 2(3 x 4)/2 = 2(12)/2 = 12 = u²        

3.- Add all the areas

Total area = 33 + 44 + 55 + 12 = 144 u²

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation: