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Chapter 3: Q. 3.70 (page 357)

The lengths of two sides of a triangular window are seven feet and five feet. The perimeter is 18 feet. How long is the third side?

Short Answer

Expert verified

The third side of the triangular window is 6 feet.

Step by step solution

01

Step 1. Given information

Given the two sides of the triangular window is seven feet and five feet.

The third side of the triangular window is x.

The perimeter of the triangular window is 18 feet.

02

Step 2. Perimeter formula

The perimeter of the triangular window is sum of the sides of window

p=a+b+cp=a+b+c

03

Step 3. Solution

18=7+5+x18=12+x18-12=xx=6

the third side is 6 feet

18=7+5+x18=12+x18-12=xx=6

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