Please help me... What is the surface area of the triangular prism?
15 1
15 ft
9 ft
40 ft
24 ft
[Not drawn to scale)
2,001 square feet
2,376 square feet
2,592 square feet
4,320 square feet

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step-by-step explanation:

29.5977692753

step-by-step explanation:

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.

answer: c. is your answer

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