I have been working on this for a half hour with no luck so any help would be appreciated!

A manufacturer is designing special packaging for a
product in the shape of a truncated pyramid. A truncated
pyramid is a pyramid with the top cut off. The model he
is building is shown in the figure with the measurements.
The bases are not regular figures. The lateral sides are
trapezoids. The height of each trapezoidal face is 12 cm.
Determine the amount of material needed to build the
model (assuming no overlap on the sides).

here is the photo: http://imageshack.us/content_round.php?page=done&l=img

Question

I have been working on this for a half hour with no luck so any help would be appreciated!

A manufacturer is designing special packaging for a
product in the shape of a truncated pyramid. A truncated
pyramid is a pyramid with the top cut off. The model he
is building is shown in the figure with the measurements.
The bases are not regular figures. The lateral sides are
trapezoids. The height of each trapezoidal face is 12 cm.
Determine the amount of material needed to build the
model (assuming no overlap on the sides).

here is the photo: http://imageshack.us/content_round.php?page=done&l=img

amistre64 · Answer

bad link

anonymous · Answer

yea

anonymous · Answer

http://imageshack.us/content_round.php?page=done&l=img843/8582/truncatedpyramid.jpg&via=mupload&newlp=1

anonymous · Answer

sorry don't know why it cut it off

amistre64 · Answer

better, now i gotta remember what the question is :)

amistre64 · Answer

surface area right?

amistre64 · Answer

you have 2 trianlges to areate; and 3 sides

amistre64 · Answer

the face height is 12 ...

anonymous · Answer

sorry don't know why it cut it off

anonymous · Answer

yes it is asking for the surface area

amistre64 · Answer

the area of a side is the average of the bases times face height

amistre64 · Answer

(3+6)/2 = 9

9*12 = 108 for the surface area, but thats from memory and could be wrong

anonymous · Answer

i got 156

anonymous · Answer

is that right?

anonymous · Answer

actually nvm one more calc i forgot

anonymous · Answer

246

anonymous · Answer

if that's not is sorry i dont know

anonymous · Answer

its says the surface area of a regular pyramid is SA=(1.2)pl where p is the perimeter of the base and l is the slant height

anonymous · Answer

sorry Sa=(1.2)pl+B where B is the area of the base

anonymous · Answer

i got that by bottom (24) top (6) front (90) +right side back (72) and left side back 54

amistre64 · Answer

your bases are 

3,4, 5   and 
6,8,10
-------
(9,12,15) 12 = (108,144, 180)/2 = 54 + 72 + 90

  54 + 
  72 + 
  90
----
216 for the sides

akshay_budhkar · Answer

Such a big question!!

amistre64 · Answer

plus the area of the triangles;  3*4 = 12/2 = 6
                                            6*8 = 48/2 = 24
                                                                 ----
                                                                  30

216
  30
-----
246

anonymous · Answer

HA! i got it first

amistre64 · Answer

you did, but im impressed that i got it at all ;)

anonymous · Answer

lol nah u are legend

akshay_budhkar · Answer

lol guys fighting for who came first!!

akshay_budhkar · Answer

I DID!! lol

anonymous · Answer

thats what I got too but I felt like maybe it was wrong without the slant height but I didn't know what to do

amistre64 · Answer

face height is what was important i think; without that it would have been trickier

anonymous · Answer

ok cool I'll go with it