If the perimeters are equal, you can form an equation to find x:
x + x + 12 + x + x + 12 = x + 11 + x + 11 + x + 16
4x + 24 = 3x + 38
- 3x
x + 24 = 38
- 24
x = 14
Now you can substitute the x value into the perimeter:
(4 × 14) + 24
56 + 24 = 80 cm
(3 × 14) + 38
42 + 38 = 80 cm
So the perimeter would be 80 cm.
I hope this helps!
If it is 90 degreees at the angle
I'll help. I love helping people
Answer:
533.6cm²
Step-by-step explanation:
Hello!
I'm here to answer your question!
<u>Area of each triangular base:</u>

<u />
<u>Area of the rectangular faces:</u>



<u>Add to find the surface area:</u>

Thus, the surface area of the triangular prism is = 533.6 yd²
Hope this helps you!
Hugs from,
Josh
Answer:
The second one
Step-by-step explanation: