In a real world situation why would we need to know the surface area of a space figure?

Question

I just cant seem to understand why in the world woudl we need 2 know the surface area of cylinders, cubes, prisms, etc. Why would we need to know This In the world?

Answer 1

You aren't going to like the answer. the real world is made up of word problems which do not sound like the surface area of something would answer it. No one will one day come up to an engineer or a physicist and ask them to find an integral. Instead they come up and say hy did my bridge fall down? or how little steel can I put in this building and insure it will still be standing ten years from now? Wrapped in this answer are such things like surface area and many more math-like stuff. Stay in school and get your education. You won't ever regret having an education.

Answer 2

If you eventually want to become an engineer, you will need it for a lot of things.

For instance, on hydraulics you can chand the amount of force you can get from a cylinder by increasing or decreasing the amount of surface area on the head of the cylinder. If I have a constant fluid pressure, the more surface area I have the more power I can get out of that cylinder but the slower it will probably move also, because it means more fluid has to move to complete the same job.

You also need to know surface area for utilizing cushion curves as a packaging engineer. Too much surface area on the cushion design acts like doing a belly flop. It decreases the stop time too much and puts too much force on what you're trying to protect. If you don't allow enough surface area, it's like diving into a pool and hitting your head on the bottom of the pool. Too little surface area will allow the cushion to bottom out and your product breaks. But if you get the amount of surface area right you don't belly flop or hit your head on the bottom of the pool.

You also need to know surface area for figuring how to build the foundation on a house. If the weight of the house isn't distributed over enough surface area the house or building will sink. For instance, at Indiana University they building designers for got to calculate for the weight of the books in the library building that was built. Now the library supposedly sinks about an inch a year.

Engineers have to normally take so many calculations into account that it's not funny. And the bigger the project or thing is that is being designed, the more that has to be calculated. The Golden Gate Bridge even takes into account the curvature of the earth. The two main sets of columns in the bridge aren't parallel to each other. The tops of the bridge angle slightly away from each other to account for the curvature of the earth.

That kind of info is used in all sorts of regards to design things.

Answer 3

The more of the gray matter that you use while it is fresh the better understanding you may have when given a situation that requires a solution.
There are no problems, the solutions await.

Answer 4

You own a triangular plot of land (those are plenty, plenty greater worry-unfastened than you think of). you opt to sell it, and the going cost on your section is $3,500 consistent with acre. How plenty cost will your actual assets agent make?

Answer 5

to calculate cost and amount of paint required to paint it ,cover it etc....just use your brain