Question

What is the surface area of the right prism?
A. 960 in^2
B. 1,344 in^2
C. 1,920 in^2
D. 1,152 in^2

Answer 1

So you know how to find the area of a rectangle, right? Just multiply one side by the other. So in this case, you have 6 sides. Find the area of the rectangle made by each side, then add them all together.

Answer 2

so the answer is a?

Answer 3

because 8*2+12*2=40
40*24=960

Answer 4

so the rectangles are


and you have 2 of each rectangle.

Answer 5

WAIT NO. you have to multiply that whole thing by 2, right?

Answer 6

so the answer is c?

Answer 7

closer.

Answer 8

you have 2 of each rectangle. So you take 8*24 and add 8*12 and add 12*24... then multiply that whole thing by 2. What did you get this time?

Answer 9

1152? the answer is d?

Answer 10

Bingo!

Answer 11

thank you :)