how do i find the surface area of a rectangular prsim
http://www.math.com/tables/geometry/surfareas.htm
THANK YOU NOW I GOT THE THING.
You're welcome. :-)
To find the surface area of a rectangular prism, you need to calculate the combined areas of all its faces.
A rectangular prism has six faces: a top and bottom face (both being rectangles), and four side faces (also rectangles). The formula to calculate the surface area of a rectangular prism is:
Surface Area = 2(lw + lh + wh)
Here's how to find the surface area step by step:
1. Measure the length (l), width (w), and height (h) of the rectangular prism. Make sure to use the same units for all measurements.
2. Multiply the length (l) by the width (w), then multiply that result by 2. This will give you the area of the top and bottom faces.
3. Multiply the length (l) by the height (h), then multiply that result by 2. This will give you the area of the side faces that have length l.
4. Multiply the width (w) by the height (h), then multiply that result by 2. This will give you the area of the side faces that have width w.
5. Add up all the results from steps 2, 3, and 4. The sum will give you the surface area of the rectangular prism.
Let's take an example:
Suppose you have a rectangular prism with a length of 5 cm, a width of 3 cm, and a height of 4 cm.
Applying the formula:
Surface Area = 2(5*3 + 5*4 + 3*4)
= 2(15 + 20 + 12)
= 2(47)
= 94 cm²
Therefore, the surface area of the rectangular prism is 94 cm².