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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 lon…

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 lon…
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3 votes
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 Techagrammer
by
7.6k points

1 Answer

2 votes
equation: 450 = 128 + 150 + n

work:

1st step:
128+150 = 278

2nd step:
450-278 = 172

answer: 172

3rd step (checking) :
450 = 128 + 150 + 172
450 = 278 + 172
450 = 450

User Babak Fakhriloo
by
7.5k points
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