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# Graph help?

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I've tried to do these but I've been stuck for a while now. Please help and show work because I would like to know how to do these. Thanks!!

Apr 29, 2019

#1
+106535
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First one

Distance from (0,1) to(4,1)  = 3

Distance from (0,1) to ( 2,4)  =   sqrt [ ( 2 - 0)^2 + (4-1)^2 ]  = sqrt (2^2 + 3^2) = sqrt(13)

Distance from (4.1) to ( 2.4)  = sqrt [ (4-2)^2 + (4-1)^2 ]  = sqrt (2^2 + 3^2 )  =  sqrt (13)

So....perimeter  =   3 + 2sqrt(13)   units

Area  = base * height  / 2  = ( 4 * 3) / 2 =  12 /2  units^2  =  6 units^2

Based on this....do you want to try the second one ???

Apr 29, 2019
#2
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Great. Thank you. I'm going to try the second one now. It's probably going to take me a few minutes though.

Guest Apr 29, 2019
#3
+106535
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CPhill  Apr 29, 2019
#4
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Okay so... I don't think I did this correctly. I got 0 for the perimeter and 6^2 units for the area.

Guest Apr 29, 2019
#5
+106535
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OK.....probably not 0 for the perimeter.....look at this

Easy to find the distance from (1,1) to (1,4)  = 3   and from (1,1) to (5,1)  = 4

Distance from (1,4) to(5,1)  =  sqrt [ ( 5 - 1)^2 + (4 - 1)^2 ]  = sqrt [ 4^2 + 3^2 ]  = sqrt(25)  = 5

So....the perimeter  = 3 + 4 + 5  =  12

You got the area correct...= 6 units^2......good job  !!!!

CPhill  Apr 29, 2019
edited by CPhill  Apr 29, 2019
#6
+1

Oh okay! I just made it more complicated than it actually was! Thank you for the help!!

Guest Apr 29, 2019
#7
+106535
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OK man....!!!!

CPhill  Apr 29, 2019