An expression which represents the total perimeter of the triangular pool edge is: A. 12x² + 15.
<h3>How to calculate the perimeter of a triangle?</h3>
Mathematically, the perimeter of a triangle can be calculated by using this formula:
P = a + b + c
<u>Where:</u>
a, b, and c are length of sides.
In this scenario, the total perimeter of this triangular community pool is given by this mathematical expression:
Total perimeter = 3 × side of square
Total perimeter = 3 × (4x² + 5)
Total perimeter = 12x² + 15 units.
Read more on perimeter of triangle here: brainly.com/question/24382052
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<u>Complete Question:</u>
The tile along the edge of a triangular community pool needs to be replaced. Which expression represents the total perimeter of the pool edge?
