Question

please help me :(


A small sinkhole has formed close a heavily travelled street. The city plans to fence it in to keep citizens from putting themselves in danger. What is the perimeter of a triangular-shaped fence the city can place around the sinkhole using integer coordinates (no decimals) on the grid? You must show all work to receive credit.

Answer 1

@Directrix

Answer 2

@perl

Answer 3

@jim_thompson5910

Answer 4

this might help

Answer 5

@jim_thompson5910 it didn't really help

Answer 6

you need to find the perimeter of the triangle I added

Answer 7

find the length of each side, then add up the sides

Answer 8

@bangbang559 Do as JThompson directed and you will have the answer.

All you have to do is to count the number of units on the graph of each side of the triangle.

For example, on the base of the triangle, how far is it from -8 to 2 ?

Answer 9

10 units?

Answer 10

Yes.

Answer 11

okay so how would I put all this info into my official answer?

Answer 12

You are not finished. You have to get the lengths of the other two sides.

Answer 13

That vertical segment - how long is it - from 2 to - 4 ?

Answer 14

6

Answer 15

Now, you have to find the diagonal segment length --> the one that is the hypotenuse of the triangle.

6^2 + 10^2= c^2

Solve for c.

Answer 16

I cant figure it out :/

Answer 17

@Directrix

Answer 18

6^2 + 10^2= c^2

36 + 100 = c^2

136 = c^2

What is the square root of 136?

That is c.

Answer 19

11.6619037897?

Answer 20

Correct. To the nearest tenth, that is 11.7.

So, the perimeter of the triangle is 11.7 + 6 + 10 = ?

Answer 21

@bangbang559

Answer 22

27.7

Answer 23

@Directrix

Answer 24

27.7 is what I got, too, for the perimeter of the triangular fence around the sinkhole.

Answer 25

okay now how do I put all this info into my answer?

Answer 26

@Directrix

Answer 27

Read back through the thread and write it up just like the problem was done in the thread.

Answer 28

6^2 + 10^2= c^2

36 + 100 = c^2

136 = c^2

c= 27.7 the perimeter of the triangular fence around the sinkhole

is this the answer?

Answer 29

@Directrix

Answer 30

@Directrix is that the answer?