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Area Videos 26 videos

Area
8485 Views

Okay, so you know the length and width of your cutting board, but how do you find the area? Watch the video and find out. Then you can brag to all...

Area Formulas
6800 Views

We know how much you love formulas. You’ve got a couple scratched into the top of your desk and another tattooed on your left forearm (your mom i...

Area of an Irregular Shape
36353 Views

We feel really bad for these irregular shapes. We can only imagine how they must feel. Perhaps we could recommend a high-fiber diet? That might hel...

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CAHSEE Math 5.2 Measurement and Geometry 187 Views


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Description:

Measurement and Geometry Drill 5 Problem 2. What is the area of the triangle?

Language:
English Language

Transcript

00:03

Here’s a question for you to shmoop ‘til you’re blue in the face…

00:07

A triangle is formed by connecting the points A(-3, 2), B(11, 2), and C(4, 7) on the coordinate grid.

00:16

What is the area of the resulting triangle?

00:19

And here are the potential answers...

00:26

This question is testing our ability to, well, draw...

00:29

…and also whether we can just calculate area with some complex inputs.

00:34

So we should know that the formula for area of a triangle is base times height divided by 2, right?

00:40

If we don’t, we may want to take extreme measures to commit it to memory …

00:48

So draw the triangle and we have negative 3 positive 2, 11, 2 and 4, 7… there we go...

00:55

Here we can see that the base is given by this area – and we can count that it’s

00:59

14 units… and the height is 1 2 3 4 5.

01:03

So we just plug in the numbers to the formula and we get 14 times 5 over 2 or.. 35.

01:11

Answer: C.

01:13

As in, “Cubism.”

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