In this video, I teach you what you need to know about volume to ace the GED math test! I cover how to understand and find the Volume of Rectangular Prisms, Cylinders, Spheres, Cubes, Cones, and Pyramids.
For GED math, does anyone who has taken the test already know if pi (π) 3.14 is left in a question, like v=16π or is 3.14 always multiplied by, for example, the radius squared for a cylinder? My Kaplan book and a RU-vid video by Test Prep Champions seem to differ on this, and I want to be prepared.
During the official GED test are we required to know all of these formulas or are we given a sheet that tell us? also is the test on computer or on paper?
@S G Why do you say it's useless? You have to use it if you want to get a high score unless you memorize all the formulas, which there's no reason to do.
For GED math, does anyone who has taken the test already know if pi (π) 3.14 is left in a question, like v=16π or is 3.14 always multiplied by, for example, the radius squared for a cylinder? My Kaplan book and a RU-vid video by Test Prep Champions seem to differ on this, and I want to be prepared.
Unfortunately, I don't know the answer to this. Tbh, I've seen it in practice questions just left as the pi symbol and I've also seen it multiplied out. I'd be prepared for either way.
if any volume fill in the blank question invloving pi was asked, do I just fill in the value together with the pi i.e 16pi or do i fill in the total value after multiplication with the pi?
It's the same formula. There's no difference other than the order the terms are written in. Mine just has 2(pie)r squared written first. Addition is cumulative, so the order you do the addition doesn't matter. Either will give you the same answer.
@@TestPrepChampions I looked at the video again, you found the area of a circle not the surface area of a cylinder. My mistake. Do you have any videos for the surface area? I'm not sure what the 2 stands for. Multiply?
@@kidc_7951 No problem. I don't have a full video on it, but I did an example in my live stream on Friday. And yes, you're right. The 2 just means that you do 2 times pi times the radius times the height and add that to 2 times pi times the radius squared. If you look at my last live stream video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4loeOxkBnWI.html and skip to about 1 hour and 42 minutes in, I do an example of surface area calculation with a cylinder.
Hi, thanks for watching. In some cases you have to multiply by pi, but in others they just leave pi in the answer choices without multiplying. It just depends on which version of the test you get.
