Question

find the perimeter. 34 cm 20 cm 42 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: Substitute the given side - lengths into the formula

Here, \(a = 34\space cm\), \(b = 20\space cm\), and \(c = 42\space cm\). Then \(P=34 + 20+42\).

Step3: Perform the addition

\(34+20 = 54\), and \(54 + 42=96\).

Answer:

\(96\space cm\)