Respuesta :

[tex]P=2L+2W[/tex]

We know that L = 68 and W = 71. Plug these into our equation above.

[tex]P=2(68)+2(71)[/tex]

According to the order of operations, we must multiply first.
2×68 = 136, 2×71 = 142

[tex]P=136+142[/tex]

[tex]\boxed{P=278}[/tex]