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Acarpenter2
 one year ago
For the surface area of a rectangular prism do i have to double it because its a 3D shape? For example if the length of it is 12, the width 8 and the height 6. would the equation look like this: A= 2(8*12+6*12+6*8)? or would it look different.
Acarpenter2
 one year ago
For the surface area of a rectangular prism do i have to double it because its a 3D shape? For example if the length of it is 12, the width 8 and the height 6. would the equation look like this: A= 2(8*12+6*12+6*8)? or would it look different.

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sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0So once you find the area of one side of the rectangle, multiply it by four. Then find the area of the sides. dw:1435756930736:dw

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0So there are four x's that should be the same side of this is a rectangle. How would you solve for the y's.

Acarpenter2
 one year ago
Best ResponseYou've already chosen the best response.0I'm not trying to solve for y's i just wanted to know how to find the surface area of a 3D shape. also what if it didn't have a top?

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0The surface area of something is every single side. since it's a 3D shape, it has... 6 faces. Hence why you need to find out what "y" equals in order to find the surface area of something. If it didn't have the top I don't think it'd be considered a 3D shape.

Acarpenter2
 one year ago
Best ResponseYou've already chosen the best response.0@sloppycanada buckets don't have tops does that mean there not 3D...... honestly think before you type.

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0Yes, but they have bottoms... in which case, you'd still have to find the surface area of the bottom of the pail.

Acarpenter2
 one year ago
Best ResponseYou've already chosen the best response.0but so does the rectangular prism! it has a bottom and a top

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435764803251:dw How many faces does this have?

Acarpenter2
 one year ago
Best ResponseYou've already chosen the best response.07 the 6 front sides and the inside

Acarpenter2
 one year ago
Best ResponseYou've already chosen the best response.06 outsides not front sides

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0No, we don't care about the inside. Pick up a box, a good ol' cardboard box. How many faces will that have when you prop it up?
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