A road crew is working close to a city sidewalk. They have created a sizeable ditch in an effort to replace old sewage pipes. The city plans to fence in the work area to keep citizens from finding themselves in harm's way. What is the perimeter of a triangular-shaped fence the city can place around the worksite using integer coordinates (no decimals) on the grid? You must show all work to receive credit.

Question

anonymous · Answer

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zale101 · Answer

they are asking you to find the coordinates that's most likely outlines the whole ditch. Then, once you find those three coordinates draw a triangle around the ditch and find its length by using the distance formula
$$D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$$
|dw:1392369687524:dw|
something like this

anonymous · Answer

It can be any three coordinates

anonymous · Answer

???

anonymous · Answer

(1,-5) to (5,2) to (10,-5) would work right?? @Zale101

zale101 · Answer

yeah, it can be any coordinates and yes that would work

anonymous · Answer

now I do the distance formula for which ones together, there is 3 not 4

zale101 · Answer

|dw:1392370172031:dw|
do the distance formula for the three sides and add them up to get the perimeter