Question

what is the perimeter?11 mm11 mm12 mmmillimeterssubmit

Explanation:

Step1: Recall the formula for perimeter

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

Step2: Substitute the side - lengths

Here, \(a = 11\) mm, \(b = 11\) mm, \(c = 12\) mm. Then \(P=11+11 + 12\).

Step3: Calculate the sum

\(11+11+12=(11 + 11)+12=22+12 = 34\).

Answer:

34