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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.


128x + 150 = 450; x = 2.34 cm


x + 278 = 450; x = 172 cm


2x + 278 = 450; x = 86 cm


150x + 128 = 450; x = 2.15 cm

Verified Answer :

chelseaharpe820

Answer:

X + 278 = 450; x = 172 cm

Step-by-step explanation:

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The given triangle has a perimeter of 450 cm. We know that two of its sides are 128 cm and 150 cm. Using the equation 450 = 278 + x, x = 172 cm.

What is perimeter?

A perimeter is a closed path that encompasses, surrounds, or outlines either a two dimensional shape or a one-dimensional length.

Perimeter of a triangle is the sum of all sides of a triangle.

Side 1 = 128 cm

Side 2 = 150 cm

Side 3 = x cm

Perimeter = 450 cm

Perimeter = side 1 + side 2 + side 3

450 = 128 + 150 + x

x = 450 - 278 cm

x = 172 cm

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