Question 508712
You can't!
Here's why:
The perimeter, P, of a rectangle with length, L, and width, W, is given by:
{{{P = 2(L+W)}}} Now if {{{P = 60}}}, then:
{{{60 = 2(L+W)}}} Divide both sides by 2.
{{{30 = L+W}}}
Now what two numbers added together will give 30?
Try...
1+29 = 30
2+28 = 30
3+27 = 30
4+26 = 30
5+25 = 30
6+24 = 30
7+23 = 30
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See what I mean?