Final answer:
To find the perimeter of Rhiannon's new mural, we need to calculate the dimensions of the mural and then add up all the sides.
Step-by-step explanation:
The question is asking about finding the perimeter of Rhiannon's new mural. To find the perimeter, we need to know the dimensions of the mural. Once we have the dimensions, we add up all the sides to find the perimeter. For example, if the mural is a rectangle with length 10 feet and width 8 feet, the perimeter would be 10 + 10 + 8 + 8 = 36 feet.