Answer: The answer is 84 inches.
Step-by-step explanation: It is given that twelve round gold medals fit inside a box where 4 medals are placed in one ray. So, the number of rows in the box is 3.
The radius of each gold medal = 3 inches.
Therefore, diameter of each gold medal = 2 × 3 = 6 inches.
The box is obviously in the rectangular form where
[tex]\textup{length} = 6\times 4=24~\textup{inches}\\\textup{and}\\\textup{Breadth}=6\times 3=18~\textup{inches}.[/tex]
The red tape fits snugly around the sides of the box, so it will cover whole of the box.
Therefore, the length of the tape = 24+18+24+18 = 84 inches.
