class Block:
    def __init__(self, dimensions: list):
        self.width = dimensions[0]
        self.length = dimensions[1]
        self.height = dimensions[2]

    def get_width(self):
        return self.width

    def get_length(self):
        return self.length

    def get_height(self):
        return self.height

    def get_volume(self):
        return self.width * self.length * self.height

    def get_surface_area(self):
        return (
            2 * self.length * self.height
            + 2 * self.width * self.height
            + 2 * self.width * self.length
        )