alg
posted by John .
a garden has width ã13 and length 7ã13. whats the perimeter of the garden in the simplest radical form
a) 14ã13 units
b) 16ã13 units
c) 91 units
d) 8ã13 units

Is ã13 supposed to mean √13 ?
Is the garden a rectangle?
If so, isn't the perimeter just the sum of the 4 sides? 
Is ã13 supposed to mean √13 ?
yes and yes 
So let's just add them up
√13 + √13 + 7√13 + 7√13
= 16√13
BTW, I get the square root sign on my PC by holding down the Alt key and while it is held down, on the number pad I pres 251, then release the Alt key
There are many such symbols that you can create that way, just try different combinations and make yourself a list.