yego.me
yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

Creating scale drawings | Geometry | 7th grade | Khan Academy

2m read
·Nov 11, 2024

Sue is a software engineer. She wants to create a large-scale drawing of a processor inside a cell phone. The processor is a square chip, nine millimeters on each side. Draw the processor such that one unit on the grid below represents one half of a millimeter.

All right, so let's just think about these two worlds: you have the drawing and you have the chip in the real world. The drawing we're thinking in terms of these units here on this graph paper, so units. And the chip, we're thinking in terms of millimeters.

So we can set up a table here, and they tell us to draw it such that one unit represents half a millimeter. So one unit would represent one half of a millimeter. They tell us that the processor is nine millimeters on each side. So that is how many times as many millimeters?

Well, to go from one half to nine, you have to multiply by 18. So that's going to be 18 times as many units as well. So if I want to do a scale drawing right over here, it's going to be a square. It's a square chip, and since the scale is one unit, it represents half a millimeter; 18 units would represent nine millimeters.

And so I would want to do 18 units on a side. So, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18. So that would be the left side of the chip. Let me just see if I can draw a straight line there, just like that.

Then it would also be 18 wide, 18 units wide, representing 9 millimeters in the real world. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18. This is making my eyes hurt.

All right, so just like that. And then I could draw the other parts of it; it would be like that. And then I would just go straight down like that. And there you have it! I have drawn a scale drawing of our processor, and we are all done.

Reshma Shetty Speaks at Y Combinator's Female Founders Conference 2016
Introducing a New Baby Elephant – Day 85 | Safari Live

More Articles

View All
Hyphens vs. dashes | Punctuation | Khan Academy
Hello Garans, hello Paige, hi David. So today we’re going to learn about hyphens and what a hyphen is. It’s a little stick like this, as opposed to a dash which is about twice as long. People confuse them a lot, uh, but they have very different functions.…
Bill Belichick & Ray Dalio on Identifying and Addressing Mistakes: Part 2
So we do, uh, some of the things, we actually video everything that’s going on, and then you could look at the video and then reflect on it. One of the things I found is that, um, some people, when they look at their, uh, mistakes, react differently than …
How a Shark's Vision Works | When Sharks Attack
Elvin is part of a series of events puzzling investigators: nine shark attacks along the southeast Florida coast in 2017, more than double the average. With leads coming up short, some local authorities come up with their own theories for the spike. Vero …
15 High Paying Jobs Right Now
In an ideal world, we’d all start a business. It would be successful. We could employ multiple people, and we’d all live happily ever after in financial freedom. But sometimes, though, just to get there, we have to put in a lot of extra work elsewhere. Fo…
Envy Can Be Useful, or It Can Eat You Alive
Do you want to tell us about some of the jobs that you had as a youth and the specific job that kicked off your fanatical obsession with creating wealth? This gets a little personal, and I don’t want to do the humble brag thing. There was some thread goin…
THE FED JUST BAILED OUT THE STOCK MARKET AGAIN
What’s up you guys, it’s Graham here. So it finally happened! It’s now official! We’ve been waiting weeks for this announcement to come to light, and until now we’ve just been hypothesizing about what’s going on and how this is going to impact everyone wa…