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Okay, PEOPLE.
I feel...
SMART!
Surface Area of a Cube = 6a²
In words, the surface area of a cube is the area of the six squares that cover it. The area of one of them is a*a, or a 2 . Since these are all the same, you can multiply one of them by six, so the surface area of a cube is 6 times one of the sides squared.
Surface Area of a Rectangular Prism = 2ab+2bc+2ac
In words, the surface area of a rectangular prism is the are of the six rectangles that cover it. But we don't have to figure out all six because we know that the top and bottom are the same, the front and back are the same, and the left and right sides are the same.
The area of the top and bottom (side lengths a and c) = a*c. Since there are two of them, you get 2ac. The front and back have side lengths of b and c. The area of one of them is b*c, and there are two of them, so the surface area of those two is 2bc. The left and right side have side lengths of a and b, so the surface area of one of them is a*b. Again, there are two of them, so their combined surface area is 2ab.
(('Cuz I think it's time for some funny. x3 Apparently, they drank the wine at the party yesterday, but Tio forgot that in the bottle was a little project she made to make herself smarter. Gash has it too; anybody else who drank it can be the same way. x3 Also, it was an excuse to use the icon. XDDD All of the info was copied from here.))
I feel...
SMART!
Surface Area of a Cube = 6a²
In words, the surface area of a cube is the area of the six squares that cover it. The area of one of them is a*a, or a 2 . Since these are all the same, you can multiply one of them by six, so the surface area of a cube is 6 times one of the sides squared.
Surface Area of a Rectangular Prism = 2ab+2bc+2ac
In words, the surface area of a rectangular prism is the are of the six rectangles that cover it. But we don't have to figure out all six because we know that the top and bottom are the same, the front and back are the same, and the left and right sides are the same.
The area of the top and bottom (side lengths a and c) = a*c. Since there are two of them, you get 2ac. The front and back have side lengths of b and c. The area of one of them is b*c, and there are two of them, so the surface area of those two is 2bc. The left and right side have side lengths of a and b, so the surface area of one of them is a*b. Again, there are two of them, so their combined surface area is 2ab.
(('Cuz I think it's time for some funny. x3 Apparently, they drank the wine at the party yesterday, but Tio forgot that in the bottle was a little project she made to make herself smarter. Gash has it too; anybody else who drank it can be the same way. x3 Also, it was an excuse to use the icon. XDDD All of the info was copied from here.))