HELPPP PLEASE . The net of a triangular prism is shown below. What is the
total surface area of this triangular prism in square meters?

SA = 312 m²

Step-by-step explanation:

SA = base + base + rectangular + rectangular + rectangular

SA = (10 × 12) + (10 × 12) + (11 × 6) + (11 × 6) + ( 10 × 6)

SA = 60 + 60 + 66 + 66 + 60

SA = 312 m²

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

80

step-by-step explanation: