An equilateral triangle has a perimeter of 15 inches. What is the length of one side?
Options
A
3 inches
B
5 inches
C
7 inches
D
10 inches
Answer & Analysis
Answer
B
Analysis
Question Analysis:
This question is about the relationship between the perimeter and side - length of an equilateral triangle.
The main focus is on using the perimeter formula for an equilateral triangle.
Key Concept Explanation:
The perimeter of an equilateral triangle is given by , where is the length of one side.
Step - by - Step Solution:
We are given that inches.
Using the formula , we substitute into the equation: .
To solve for , we divide both sides by 3.
So, inches.
Option Analysis:
Option A: 3 inches is incorrect. If
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