To solve this problem, we'll follow these steps:
Step 1: Gather the given side lengths of quadrilateral ABCD.
Step 2: Since it's necessary to understand summation, add all lengths.
Step 3: Conclude from sum.
Now, let's work through each step:
Step 1: The problem provides:
ABCDACBD=10.5,=13,=7.5,=7.5.
Step 2: Add them together:
Perimeter=AB+CD+AC+BD=10.5+13+7.5+7.5.
Step 3: Calculate: Perimeter=10.5+13+7.5+7.5=38.5.
Therefore, the solution is that the perimeter of quadrilateral ABCD is 38.5 .