Length of 4 feet a width of 3 feet and a height of 1 foot what the answer?

Question

Home work from school and i need answer 

Answer 1

It helps to draw a picture. In this case you are adding up the Areas of each face (6 in all but 2 of each pair of opposite faces). So, you have 2*(3x4) + 2*(3x1) + 2*(4x1).  

 

  ______

 /         / top & bottom +  2 short side panels + 2 long side panels 

/____  /