Hi I did my working on paper. You can see it in the photo.
Let the length of side AB be $x$, then

Therefore, the perimeter of ABCDE is 2(12) + 2(4) + 6 = 24 + 8 + 6 = 38 in.
Answer:
Step-by-step explanation:
8(8)7=448 different outfit combinations
Answer:
c) three
-----------------------------------------------------------------------------------------------------------------
Step-by-step:
The tetrahedron is a triangular pyramid with equilateral triangles on each face.
Answer:
5. A
6. B
7. A
Step-by-step explanation: