Question

A wire with a length of 54 cm is bent to form a shape as shown in the diagram. what is the length of side AB​

Answer 1

Explanation:

Length of the wire = 54 cm

12 + (AB + 9) + 9 + 12 + AB = 54

Add the like terms

12+ 9 + 9 + 12 + AB + AB = 54

42 + 2AB = 54

2AB = 54 - 42

2AB = 12

AB = 12/2

AB = 6 cm