If the number representing volume and surface area of a cube are equal, then the length of the edge of the cube in terms of the unit of measurement will be

To solve this, we use the mathematical formulas for a cube. Let the length of the edge of the cube be x. The formula for the volume of a cube is x raised to the power of 3. The formula for the total surface area of a cube is 6 multiplied by x raised to the power of 2. According to the question, the numerical values of the volume and surface area are equal. Therefore, we set up the equation: x cubed equals 6 times x squared. To find x, we divide both sides of the equation by x squared. This leaves us with x equals 6. Thus, the length of the edge of the cube is 6 units. This matches option D.