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.
Stacey Warren - Expert brainly.com
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So 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|
So there are four x's that should be the same side of this is a rectangle. How would you solve for the y's.
I'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?
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The 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.
@sloppycanada buckets don't have tops does that mean there not 3D...... honestly think before you type.
Yes, but they have bottoms... in which case, you'd still have to find the surface area of the bottom of the pail.
but so does the rectangular prism! it has a bottom and a top
How many faces does this have?
7 the 6 front sides and the inside
6 outsides not front sides
No, 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?