The perimeter of the rectangle is 24 cm, the length of the 1st side is 5 cm, and the length
| September 19, 2021 | education
The perimeter of the rectangle is 24 cm, the length of the 1st side is 5 cm, and the length of the other side is 10 cm. What is the 3rd side?
Let us denote by y the length of the unknown side of a given geometric figure.
In the initial data for this task, it is reported that the length of side number one of this triangle is five centimeters, the length of side number two is one ten centimeters, and the sum of the lengths of all three sides of this geometric figure is two dozen centimeters, therefore, we can draw up the following equation:
5 + 10 + y = 24,
solving which, we get:
15 + y = 24;
y = 24 – 15 = 9 cm.
Answer: 9 cm.
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