It is given in the question that , the box is 12 inches long, 8 inches wide and 3 inches high .
We have to find the least amount of wrapping paper that Shavon will need to completely cover the box .
And for that we have to use the formula of surface area, which is
[tex] Area= 2(length*width+width*height+length*height) [/tex]
Substituting the values of length, width and height, we will get
[tex] Area= 2(12*8+8*3+12*3) =2(156)=312 [/tex]
Correct option is the last option .
