![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
To calculate the length of fence Jolon needs to find the perimeter of the garden.
\Since the garden is a rectangular garden, use the formula for the perimeter of the rectangle.
\The perimeter P of a rectangle is given by the formula,
\P = 2L + 2W = 2 (L + W)
\Where L is the length and is W is the width of the rectangle.
\ ![\"\"](\"/userfiles/image/Library/alg1%20g12%20pg3%20pr13.gif\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
The perimeter P of a rectangle/garden is
\P = 2 (6 m + 4 m) (Substitute: L = 6m and W = 4m)
\ = 2 ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4838e363eca1a46b22f36460670b1507.png\")
10 m (Add : 6 + 4 = 10)
= 20 m (Multiply: 2 ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4838e363eca1a46b22f36460670b1507.png\")
10 = 20)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
Jolon needs to purchase 20 m fencing.