Find the length of the side of the triangle, the perimeter of which is 15 and the length of the other sides is 3 cm
| February 19, 2021 | education
Find the length of the side of the triangle, the perimeter of which is 15 and the length of the other sides is 3 cm and build a triangle 5 cm.
The perimeter of a triangle is found as the sum of all its three sides. If we know the perimeter and the lengths of 2 sides, then, therefore, we can the length of the other side of this triangle:
side length = 15 cm – 3 cm – 5 cm = 7 cm.
Answer: The length of the third side of the triangle is 7 cm.
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