The approximate length is 21 cm.
Step-by-step explanation
Finding the length of the wire implies finding the perimeter of the semicircular pendant.
To find the perimeter of the pendant, we will use the formula below:
P = 2r + πr
Where P is the perimeter of the semicircle.
r is the radius of the semicircle.
π is a constant = 22/7
From the given question, r = 4.
Substitute the values into the formula and evaluate.
