Question

what is the perimeter of parallelogram lmno? 18 cm 22 cm 40 cm 80 cm

Explanation:

Step1: Recall the property of a parallelogram

In a parallelogram, opposite sides are equal. So, \(LM = ON\) and \(LO=MN\). Given \(LM = 22\) cm and \(MN = 18\) cm.

Step2: Use the perimeter formula

The perimeter \(P\) of a parallelogram is \(P = 2(a + b)\), where \(a\) and \(b\) are the lengths of adjacent sides. Here \(a = 22\) cm and \(b = 18\) cm. Then \(P=2\times(22 + 18)\).
First, calculate the sum inside the parentheses: \(22+18=40\).
Then multiply by 2: \(2\times40 = 80\)

Answer:

\(80\) cm (the fourth option)