Question

What is the surface area of the rectangular prism below?
http://assets.openstudy.com/updates/attachments/53d7be17e4b081ba963c92f6-lilcrunch-1406647840243-a715a8a76d264138bd76ed5a89692fab.gif

A. 740 units2
B. 823 units2
C. 1260 units2
D. 700 units2

Answer 1

@mathstudent55

Answer 2

Start by finding the area of each side then add the area up.
So let's find the area of the four sides, then find the are of the top and bottom

Answer 3

Two of the sides will be 14*7, and the other two sides will be 12*7. The top and bottom will be 12*14. Does this make sense?

Answer 4

98 84 and 168

Answer 5

Yup but there's actually two of each of these squares. So now we have 98*2 + 84*2 + 168*6

Answer 6

196 168 1116

Answer 7

Sorry, the last one is meant to be 168*2, not 168*6.
You did the calculation right though.
So the last one is really 276.
Now we just add up 196+168+276