Question

find the perimeter.
18 in
36 in
40 in
p = ? 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

Here, \(a = 18\) in, \(b = 36\) in, \(c = 40\) in. Then \(P=18 + 36+40\).

Step3: Calculate the sum

\(18+36 = 54\), and \(54 + 40=94\).

Answer:

94