+0  
 
+1
137
1
avatar+500 

What is the perimeter, in cm, of quadrilateral $ABCD$ if $\overline{AB} \perp \overline{BC}$, $\overline{DC} \perp \overline{BC}$, $AB=9$ cm, $DC=4$ cm, and $BC=12$ cm?

 Mar 1, 2021
 #1
avatar+564 
+2

(9-4)^2+12^2=13^2

 

13+12+9+4=$\boxed{38}$

 Mar 1, 2021

12 Online Users

avatar