Question

find the perimeter.
20 cm
12 cm
16 cm
p =? cm

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: Identify the side - lengths

Here, \(a = 16\space cm\), \(b = 12\space cm\), and \(c = 20\space cm\).

Step3: Calculate the perimeter

\(P=16 + 12+20\)
\(P=(16 + 12)+20\)
\(P = 28+20\)
\(P=48\)

Answer:

\(48\)