anonymous
  • anonymous
composite figures
Geometry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
anonymous
  • anonymous
need help!!!!
anonymous
  • anonymous
think of it like a rectangular prism. the surface area formula is "2ab + 2bc + 2ac" http://www.math.com/tables/geometry/surfareas.htm

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anonymous
  • anonymous
is it 2400?
anonymous
  • anonymous
is that right?
anonymous
  • anonymous
try again. the width would be "a", the length would be "b", and the height would be "c". try adding up all of the "5"s and using that for the height. then use "12" for the length, and "10" for the width
geerky42
  • geerky42
"Find the surface area of the \(\small \textbf{VISIBLE}\) sides of the boxes" |dw:1435203341959:dw| Just add up the area of these three rectangles.
anonymous
  • anonymous
ohhh you're so right! I thought by "visible sides" it meant not to consider the sides of the boxes that would be facing each other when stacked. "geerky42" explained it so well and precise. thank you.
geerky42
  • geerky42
Base is not included, so you only need to calculate these two rectangles.
geerky42
  • geerky42
|dw:1435203679087:dw|
geerky42
  • geerky42
Can you do that? @hinarauf80
geerky42
  • geerky42
It's just \(12\times20 ~+~10\times20\)
anonymous
  • anonymous
sorry i couldnt repond i have a baby she on the floor anyway thanks
anonymous
  • anonymous
i mean sitting on the floor*
anonymous
  • anonymous
its 240+200= 440
anonymous
  • anonymous
but its wrong
geerky42
  • geerky42
It's not our fault (nor your) that question is ambiguous... Try to add area of third rectangle.

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