How do I find the surface area of a box
If a is 5, b is 4, and c is 3, use the equation 2ac + 2bc + 2ab and substitute the variables.
So...
(2*5*3)+(2*4*3)+(2*5*4)
that equals 30+24+40=94
http://www.math.com/tables/geometry/surfareas.htm
so if take for instance I had 5', 4' & 3' as my sides i would take 5x4x3 * 2 for a 120?
How did you get 120?
5*4*3=60 than 60*2=120 is that right
To find the surface area of a box, you need to calculate the area of each of its six sides and then add them together. Here are the steps:
1. Identify the dimensions of the box: The dimensions typically refer to the length, width, and height of the box.
2. Calculate the area of the front and back faces: To find the area of a rectangle, multiply its length by its width. The front and back faces of the box will have the same dimensions, so calculate the area of one of them.
3. Calculate the area of the top and bottom faces: Similar to step 2, multiply the length by the width to find the area of each.
4. Calculate the area of the left and right faces: These faces will have dimensions of length and height, so multiply them together to find the area of each.
5. Add up the areas of all six faces: Sum the areas of the front, back, top, bottom, left, and right faces to get the total surface area of the box.
Here's an example:
Let's say the dimensions of the box are: length = 8 cm, width = 5 cm, and height = 3 cm.
Front and back faces: Area = length * width = 8 cm * 5 cm = 40 cm² each.
Top and bottom faces: Area = length * width = 8 cm * 5 cm = 40 cm² each.
Left and right faces: Area = length * height = 8 cm * 3 cm = 24 cm² each.
Total surface area = 2 * (40 cm²) + 2 * (24 cm²) + 2 * (40 cm²) = 136 cm²