rektangel DONT BE a triangel...rektangel got 4 sides
rim leng=2*(leng+wide), so half-rim=leng+wide=28/2=14
Then yu make box bigger: nu leng=2*old leng, nu wide=3* old wide, nu half-rim=66/2=33
yu the same gi hu asked this same quesshun bout 2 daes ago???????????
leng+wide=14 or wide=14-leng....
2*leng+3*wide=33 become 2*leng+3*(14-leng)=33
(2-3)*leng+42=33
-leng=33-42=-9
leng=9
wide=14-leng=5