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What is the perimeter of a triangle with sides 11 inches, 5 inches, and 12 inches in length?

A. 16 inches
B. 30 inches
C. 23 inches
D. 28 inches


Sagot :

To find the perimeter of a triangle, you need to add up the lengths of all its sides. Here we'll calculate the perimeter of a triangle with sides measuring 11 inches, 5 inches, and 12 inches.

Step-by-Step Solution:

1. Identify the lengths of the sides of the triangle:
- Side 1: 11 inches
- Side 2: 5 inches
- Side 3: 12 inches

2. Add the lengths of the three sides together to get the perimeter:
[tex]\[ \text{Perimeter} = \text{Side 1} + \text{Side 2} + \text{Side 3} \][/tex]

3. Substitute the given side lengths into the formula:
[tex]\[ \text{Perimeter} = 11 + 5 + 12 \][/tex]

4. Perform the addition:
[tex]\[ \text{Perimeter} = 28 \text{ inches} \][/tex]

Therefore, the perimeter of the triangle is 28 inches.

The correct answer is: 28 inches.