Mathematics, 01.12.2020 16:50 rosezgomez97
A city planner uses a coordinate grid to model the streets of a city. Each unit on the coordinate grid represents one city block. City hall is located at (0,0).The downtown area is represented by rectangleABCD, which has the vertices listed below. A(9,9) B(9,−2) C(−8,−2) D(−8,9) What is the perimeter of the downtown area?
Answers: 3
), dimensionless, is the sum of the lengths of the rectangle, that is, its 4 sides:
(1)
, 
, 
and 
are the sides of the rectangle, dimensionless. 
![BC = \sqrt{(-8-9)^{2}+[-2-(-2)]^{2}}](/tpl/images/0937/8997/5f489.png)
![CD = \sqrt{[-8-(-8)]^{2}+[9-(-2)]^{2}}](/tpl/images/0937/8997/aaddb.png)
![DA = \sqrt{[9-(-8)]^{2}+(9-9)^{2}}](/tpl/images/0937/8997/64336.png)
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A city planner uses a coordinate grid to model the streets of a city. Each unit on the coordinate gr...
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