Question 206538
Suppose that a rectangle has an area of 37 square meters. Express the perimeter as a function of the length of one of the sides. 
:
Area:
L*W = 37
W = {{{37/L}}}
:
Perimeter
P = 2L + 2W
:
Substitute {{{37/L}}} for W
P = 2L + 2({{{37/L}}})
P = 2L + {{{74/L}}}