Problema Solution
the endpoints of a trinagle are (1,2), (3, -4), and (-4,5). find the perimeter.
Answer provided by our tutors
d1 the distance between (1,2) and (3, -4) is:
d1^2 = (1-3)^2 + (2-(-4))^2
d1^2 = 40
d2 the distance between (3, -4), and (-4,5) is:
d2^2 = (3-(-4))^2 + ((-4)-5)^2
d2^2 = 130
d3 the distance between (1,2) and (-4, 5) is:
d3^2 = (1-(-4))^2 + (2-4)^2
d3^2 = 29
the perimeter is the sum of these 3 distances
P = (40)^0.5 + (130)^0.5 + (29)^0.5
P = 23.22
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