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.

Everything You Need To Know About Death and the End of Times
Sales and Marketing + How to Talk to Investors with Tyler Bosmeny and YC Partners (HtSaS 2014: 19)

More Articles

View All
Rome becomes dominant | World History | Khan Academy
Last video, we end with the conquests of Alexander the Great. How he’s able to conquer most of the map that we see right up here, especially from Greece all the way through the Middle East, through Persia and getting to the borders of India, co-conquering…
EXCLUSIVE: Confronting an Accused Ivory Smuggler | National Geographic
As part of his ivory trafficking investigation, Brian Christie has led to a small West African port in L Togo where the largest African ivory seizure in over a quarter century was recently discovered by Lieutenant Kier A. One of the men arrested at the sc…
Dave Bautista Makes a Log Ladder | Running Wild With Bear Grylls
[music playing] So the terrain here is definitely getting steeper and more committing. But you know, so much of survival is about just trying to be resourceful. I just wonder if maybe we maybe use that old trunk. Use that, get that down, and then we can d…
IPO Data Exposes the Stock Market Overvaluation in 2022...
So you might have heard the term IPO at some point over the past year, and that’s because there’s been a lot of IPOs happening. The acronym stands for Initial Public Offering, and this is the process where a private company becomes a public company. So pr…
What Causes The Northern Lights?
[Applause] Welcome to Alaska! I’m just outside of Fairbanks, and I’m trying to find the Northern Lights, the Aurora Borealis. But the conditions haven’t been ideal because tonight it’s a bit cloudy, a bit hazy, and we’ve got a moon out which is nearly ful…
Plague 101 | National Geographic
[Narrator] Plague is notorious for causing mass sickness and devastation. But as much tragedy as the disease has caused, it also helped drive crucial scientific and social progress. Plague is an infectious disease caused by the bacterium Yersinia pestis. …