MATH
posted by SALINA on .
a path #m wide surround a rectangular garden 15M wide and 18m long .what is the area of the path?

Add twice the width, w, of the path to the length, all it Length = 18+2w
Add twice the width of the path to the width, call it Breadth = 15+2w
calculate the area of the big rectangle (18+2w)(15+2w)
subtract the inside rectangle
(18+2w)(15+2w)  18*15
= 66w+4w^2