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Perimeter of a Triangle
publish date: 2026/05/16 20:57:3.125809 UTC
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The perimeter of a polygon is the distance around it. To find the perimeter, add the lengths of all its sides.
Find the perimeter of the triangle below.
Correct Answer
21 ft
Explanation
Add the lengths of all three sides:
\[P = 6 + 7 + 8 = 21 \text{ ft}\]
The perimeter of the triangle is 21 feet.
Reference
Mathematics for college students