Question

1. find the perimeter.

9.1 in.
9.1 in.
4.6 in.

Explanation:

Step1: Recall the formula for the perimeter of a triangle

The perimeter \(P\) of a triangle is \(P=a + b+ c\), where \(a\), \(b\), and \(c\) are the side - lengths of the triangle.

Step2: Substitute the given side - lengths into the formula

Here, \(a = 9.1\) in, \(b = 9.1\) in, and \(c = 4.6\) in. Then \(P=9.1+9.1 + 4.6\).
First, add \(9.1+9.1\): \(9.1+9.1=18.2\).
Then add the result to \(4.6\): \(18.2+4.6 = 22.8\).

Answer:

\(22.8\) in