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The triangle below has a total perimeter of 450 cm: picture of a triangle with sides 128 and 150. Third side unknown Write an equation and solve it to find the length of the longest side of the triangle.
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The triangle below has a total perimeter of 450 cm:

picture of a triangle with sides 128 and 150. Third side unknown

Write an equation and solve it to find the length of the longest side of the triangle.

User Andrzej Budzanowski
by
6.7k points

1 Answer

2 votes
450=128+150+x
450-278=x
x=172
User Renaud Kern
by
6.2k points
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