an open cardboard container is 8in wide12in long and 6in hig

an open cardboard container is 8in. wide,12in long and 6in high.how many square inches of cardboard are used

L = 8

W = 12

H = 6

The top is open, which has an area of LB

So, the total area is

2LH + 2BH + LB

2(8)(6) + 2(12)(6) + 8(12)

336 square inches ----> ANSWER