+0  
 
0
103
5
avatar+2442 

I got 2 side lengths: 4 and 3 and just need the 3rd which im not sure if im doing right. Would it be 5-1^2+1-4^2=sqrt(16+-9)=sqrt(7)

Is that right then I do 4+3+sqrt(7)

 Dec 4, 2018
 #1
avatar+17331 
+1

You are getting there....but what happens when you square a NEGATIVE number   (1-4)^2 = (-3)^2       Hmmmmm....did you forget?

 Dec 4, 2018
 #2
avatar+2442 
0

it becomes positive??

RainbowPanda  Dec 4, 2018
 #3
avatar+2442 
0

P=12

A=6

RainbowPanda  Dec 4, 2018
 #5
avatar+17331 
+1

Exactly!!! Kudos !

ElectricPavlov  Dec 4, 2018
 #4
avatar+203 
+4

Perimeter is 12 and the area is 6.

 Dec 4, 2018

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