Given parameters:
Length of earring hook  = 1.5cm
Length of given wire = 45cm
Dimension of the triangle = 3.2cm, 3.2cm and 2.1cm
Unknown:
Number of earrings that can be made from the wire = ?
To solve this problem, we need to calculate the total length of the earring we want to make.
 Total earring length  = Perimeter of earring + length of earring hook
                   = 3.2 + 3.2 + 2.1 + 1.5 Â
                   = 10cm
Now the length of the wire is 45cm,
 Number of earrings  = [tex]\frac{45}{10}[/tex]  = 4.5 earrings
 But this is not reasonable, therefore, we can only forge 4 complete earrings from the given length with 5cm of wire remaining.
The number of earrings that can be made is 4.