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The perimeters of the two figures shown below are equal. Find the perimeter of the triangle. (Figure not drawn to scale.)

 

 

A. 367 units

B. 250 units

C. 2184 units2

D. 30 units

 Mar 4, 2020
 #1
avatar+22043 
+2

perimeters are equal

rectangle perimeter =    5x-1   +   x   +   5x-1   +   x

    equals triangle perimeter    5x   +   6x+7   +   12

 

5x-1   + x   +  5x-1   + x    =    5x   +   6x+ 7   + 12       solve for 'x'   then you can compute the sides of the rect and tri

 Mar 4, 2020
 #2
avatar+1685 
0

                   x = 21

macabresubwoofer  Mar 4, 2020
 #3
avatar+22043 
+2

Yes, x = 21 , MS......then you use this value of x to compute the sides of the figure to calculate the perimeter of the triangle....

ElectricPavlov  Mar 4, 2020
 #4
avatar+1685 
0

Is it B ?

macabresubwoofer  Mar 4, 2020
edited by macabresubwoofer  Mar 4, 2020

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