SOLUTION: A lot is 21 ft by 30 ft. To support a fence, an architect wants an upright post at each corner and an upright post every 3 ft in between. How many of these posts are needed?

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Question 1114348: A lot is 21 ft by 30 ft. To support a fence, an architect wants an upright post at each corner and an upright post every 3 ft in between. How many of these posts are needed?
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.
The perimeter = 21 + 30 + 21 + 30 = 102 ft.


The number of 3 ft intervals =  = 34.


The number of the posts = 34.


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