Answer:
P=92 cm
Explanation:
<B and <D are congruent so you now know that <D also equals 11.5
Add all the sides up then multiply by 2
You are multiplying by two because each point is at the radius (halfway)
11.5 + 11.5 +10.5+12.5 =46
46 x 2=92
92 is the answer
Notice the dots are only half way. You have the sides 11.5, 10.5, and 12.5. It says the side D and B are congrent which means they equal. So the side is 11.5. 11.5+11.5=23 Whihc is one side of the permiter. 10.5+10.5=21. 12.5+12.5=25. 11.5+11.5=23. When you add them up you get the answer 92. Hope this helps!
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