The length of one side of an equilateral triangle is 7 cm. Find the perimeter of the triangle.
| February 24, 2021 | education
The perimeter of any triangle is equal to the sum of the lengths of all three sides of this triangle.
According to the condition of the problem, this triangle is equilateral and the length of one side of this triangle is 7 cm.
Therefore, due to the fact that this triangle is equilateral, the lengths of its other two sides are also equal to 7 cm and the perimeter P of this triangle is:
P = 7 + 7 + 7 = 14 + 7 = 21 cm.
Answer: the perimeter of this triangle is 21 cm.
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