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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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ACT Math 2.1 Plane Geometry 484 Views


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Description:

ACT Math: Plane Geometry Drill 2, Problem 1. What is the perimeter of the shape shown?

Language:
English Language

Transcript

00:02

Here is your shmoop de jour...

00:05

What is the perimeter of the shape below?

00:08

And here are the potential answers...

00:13

Okay the key thing we have to notice here is this distance 4

00:16

which is exactly half of this distance 8

00:20

and this distance 3 which is exactly half of this distance 6

00:24

Suddenly have a right triangle with sides 3 he ran for their

00:28

and thanks to Pythagoras we know that a squared plus B squared equals C squared

00:34

that 3 squared 9 plus 4 squared 16

00:38

equals by square 25 take the square root of 25 and thats how we got 5

00:42

thing. Now just add the perimeter lines and we have 3 plus

00:46

8 plus 6 plus 4 plus 5 and our perimeter here is 26.

00:51

Answer D.

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