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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 Andrey Kuznetsov
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1 Answer

3 votes
The third is 450-(128+150)=450-150-128=300-128=172
So the longest side is 172 cm
User Chiyaan Suraj
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