The length of one side of the triangle is 12 decimeters, and the lengths of the other two sides
| August 9, 2021 | education
The length of one side of the triangle is 12 decimeters, and the lengths of the other two sides are 80% of the length of this side. Find the perimeter of the triangle.
1) Find the length of the other two sides of the triangle.
To do this, multiply the length of the known side by the percentage.
12 * 80% / 100% = 12 * 0.8 = 9.6 dm.
2) Find the perimeter of the triangle.
To do this, we sum up the lengths of all three sides of the figure.
As a result, we get:
12 + 9.6 + 9.6 = 31.2 dm.
Answer: The perimeter of the triangle is 31.2 dm.
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