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Question 434559: I need help in finding the periminter of a triangle with the 3 points (-3,4)
(3,-1), (1,-2) I use the distance formula pairing sq rt point b + pt. a then pt. c + pt. b and then pt. a + pt c. What am I doing wrong?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! I need help in finding the periminter of a triangle with the 3 points
a. (-3,4)
b. (3,-1)
c. (1,-2)
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a to b = sqrt[(4--1)^2+(-3-3)^2] = sqrt[25+36] = sqrt(61)
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a to c = sqrt[(-2-4)^2+(1--3)^2] = sqrt[36+16] = sqrt(52)
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b to c = sqrt[(-2--1)^2+(1-3)^2] = sqrt[1+4] = sqrt(5)
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Add those to get the perimeter.
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Cheers,
Stan H.
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