400
A rectangular prism has a length of 4, a width of 7, and a height of 6. To calculate the surface area, I used 2 x 4 x 7 + 2 x 4 x 6 + 2 x 7 x 6 = 58,548 units squared. Is this correct? What mistake did I make?
Bonus: What is the correct answer?
What is no. I didn't do the multiplication before the addition.
Bonus: (2 x 4 x 7) + (2 x 4 x 6) + (2 x 7 x 6) = (56) + (48) + (84) = 188 units squared.