A box is 8 1/2 inches wide, 12 3/4 inches long and 5 1/2 inches tall. What is the total surface area of the box?

The total surface area of a box is .

Step-by-step explanation:

In general, the surface area is the sum of all the areas of all the shapes that cover the surface of the object.

A box is most often characterized by its height h, and its width, W, and its length L.

The total surface area of a box is made up of three pairs of sides for a total of six sides and its given by

We know that the width of a box is 8 1/2 inches, the height of a box is 5 1/2 inches, and the length of a box is 12 3/4 inches.

The total surface area of a box is

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!