Write down the length of the shoe box. Which of the following formulae is used to calculate the perimeter of the front face of the shoe box? A. Perimeter = length x width B. Perimeter = length + length + width C. Perimeter = 2 × (Length + Breadth) Mrs Dyani calculated the volume of each box and she wrote her answer as 8 160 000 mm². Identify which part of her answer is incorrect.