Hi,

     .

P = 2L + 2w

49cm = 4x + 6  + x+ 3

40cm = 5x

8cm = x

L = 19cm  and w = 11/2 cm

AND CHECKING

 2L + 2w = p

38cm + 11cm = 49CM CHECKS!

 

Answer by addingup(3677)   (Show Source): You can put this solution on YOUR website!
 Perimeter = 2L+2W

2(2x+3)+2(0.5(x+3)) = 49

4x+6+x+3 = 49 add on left

5x+9 = 49

5x = 40

x = 8

-----------------

Check:

2(8)+3 = 19

0.5*(8+3) = 5.5

Perimeter:

2L+2W = 2(19)+2(5.5) = 39+10 = 49 Correct

:

J 

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