input: from typing import List
  
  def find_total_surfacearea(length: float, breadth: float, height: float) -> float:
      """ Calculate the total surface area of a cuboid given its three dimensions.
      >>> find_total_surfacearea(2, 3, 4)
      52
      >>> find_total_surfacearea(1, 1, 1)
      6
      """
output:     return 2 * (length * breadth + breadth * height + height * length)