Marry Ann building a fence around the outer edge of a rectangular garden plot that measures 25 feet by 45 feet. She will set the posts 5 feet apart. How many posts will she need?

Question

Marry Ann building a fence around the outer edge of a rectangular garden plot that measures 25 feet by 45 feet.  She will set the posts 5 feet apart.  How many posts will she need?

anonymous · Answer

24

anonymous · Answer

24      9 for the sides of 45 and three for the sides of 25 feet. why omly three and not five? because we have posts at the corners already

anonymous · Answer

Wouldn't it be 28 posts?

anonymous · Answer

see my reason above

anonymous · Answer

Wouldn't you do the perimeter then divide by 5?

anonymous · Answer

yes. but you would be putting two in each corner.

anonymous · Answer

25/5 = 5
45/5 = 9
but now look
5 is for example the upper side and down side
so the right side will have only 7
so as the left side

5 + 5 + 7 + 7 = 24

anonymous · Answer

I need to draw a diagram that represents this problem.

anonymous · Answer

|dw:1318185989861:dw|