The formula for surface area of a triangular prism is
SA = 2(L)(W) + 2(W)(H) + 2(H)(L) * 1/2
SA = 2(3)(2) + 2(2)(4) + 2(4)(3) * 1/2
SA = 12 + 16 + 24 * 1/2
SA = 52 *1/2
SA= 26sq in
I hope this helped!:)
Answer:
Step-by-step explanation:
12 + 4c + c = c + 4
12 + 5c = c + 4
12 + 4c = 4
4c = -8
c =-2
The answer is 20 degrees
(We know that the angle is 40 because opposite angles are the same)
I hope this helps! :)