What is the perimeter of a triangle with sides measuring 15 cm, 20 cm, and 25 cm?
Understand the Problem
The question is asking for the perimeter of a triangle given the lengths of its three sides. To find the perimeter, we will sum the lengths of the sides together.
Answer
The perimeter is calculated using $P = a + b + c$.
Answer for screen readers
The perimeter of the triangle is given by the formula $P = a + b + c$.
Steps to Solve
- Identify the length of each side
Let's denote the lengths of the three sides of the triangle as $a$, $b$, and $c$. Ensure you know the values of these sides.
- Sum the lengths of the sides
The perimeter $P$ of the triangle is calculated by adding the lengths of the three sides together:
$$ P = a + b + c $$
- Calculate the perimeter
Substitute the values of $a$, $b$, and $c$ into the equation to find the perimeter.
The perimeter of the triangle is given by the formula $P = a + b + c$.
More Information
The perimeter is a measure of the total distance around the triangle. It represents the sum of all side lengths, giving a complete outline of its dimensions.
Tips
- Forgetting to include all three sides in the addition, which can lead to an incorrect perimeter.
- Confusing the perimeter with the area; remember the perimeter is just the sum of side lengths, whereas area is a measure of space.
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