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Perimeter Videos 15 videos

Perimeter of Irregular Shapes
4864 Views

Want to figure out the area and perimeter of irregular shapes? Break them down into regular shapes. For example, a flower can be broken down into s...

Perimeter and Circumference
10658 Views

It's super useful to be able to find the distance around stuff. Like when you’re being pursued by authorities while running around the base of an...

Perimeter of a Rectangle
3862 Views

Rectangles just love to have perimeters. And we just love to measure them.

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CAHSEE Math 3.1 Measurement and Geometry 196 Views


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Description:

Measurement and Geometry Drill 3 Problem 1. How many feet of drywall will be needed for this job?

Language:
English Language

Transcript

00:03

Here’s your shmoopy question du jour…

00:05

The Pentagon has run out of room, so they’ve decided to expand.

00:10

The Department of Defense will now be housed at the… Hexagon.

00:14

The building is to be turned into six equilateral,

00:17

triangular wings, each with sides measuring five feet, as shown below. 

00:23

How many feet of drywall will be needed for this job? (Black lines indicate where drywall will be built.)

00:31

And here are the potential answers...

00:35

OK, so this question is just testing our skills in visualizing real life from a drawing.

00:44

And in this case, things are simplified because all of the wall lengths are the same distance.

00:49

So let’s just count up the sides and we have 1 2 3 4 5 6 7 8 9 10 11 and 12 sides.

01:02

They are all 5 feet in length – so… 12 times 5 is 60 and the answer is C.

01:10

As in… “Construction will last 4-6 months.”

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