The Perimeter/Area Rap

Hey y'all, listen up now.
Can't find perimeter? Don't have a cow!

Just listen to this easy guide,

All ya gotta do is measure the sides!

But wait! You're not finished yet,

just add up the sides and you are set!

Hey now, let's move on,

Time to find the area of that polygon.

What kind is he? A recatangle or square?

This is going to be easy, just pull up a chair.

Now measure up the base and height,

Multiply them by each other and you've got your answer right!

Dealing with a triangle? Wanna know what to do?

Just do the same thing, then divide by two!

See a parallelogram before your eyes?

Coming to me, you were very wise!

See that point there? Draw a line down,

Times that by the base, and get rid of that frown!

Now you're a math wiz! Don't believe me?

Just test out your skills and you will see!

Perimeter and Area: Remebering Which is Which

So, you're having troubles remembering the difference between perimeter and area? Well, you chose the righyt time to check my blog.

First of all you have to know before you try to remember. Perimeter is the outside of a ploygone, and area is the area inside the polygon. I remember which is which be reminding myself that area is the area inside the polygon, and then that leaves perimeter, which I will know know is the outside. I know it might sound cheesy, but it's better than having to look up the meanings in the dictionary over and over.

Still having troubles? Check out www.6bdmath.blogspot.com for all your math troubles.

Finding the Area of a Triangle

So, you're wondering how to find the are if a triangle? Well, you're in luck because that's what I'm about to show you!

There are 2 ways to finding the area of a triangle (as with most polygons):

1. This first way works for any polygon, or strange shape:

OK, let's say that this is our triangle that we have to find the area of.

So, you're probably looking at that and freaking out, huh? Well don't be.

The first thing you have to do is count all the full squares, which will be highlighted in pink.

After we count all of those, they add up to 56. Which means: 56cm2. Now we have to add on the half squares, which will be highlighted in purple and light blue.

I highlighted them in 2 different colours so I only had to count the purple, or light blue half squares. Each of which added up to 8. 8cm2, then we add on the full 56 squares which equals 64cm2. So there you have it. The area of this triangle.

2. Now, that may sound a little complicated, so there is another way to find the area of this triangle. Also, you may not always have graph paper to do the fist one on.

So, all you need is a ruler...and a brain. It's simple really, you just measure the base and the height, then multiply them by each other, then you divide it by 2 to get your answer.

Sorry that it's a little blury. Anyways, for this triangle the height was 8cm, and the length was 16cm, so multiply that to get 128cm2. Divided by 2, equals 64cm2. See? Easy! Now you try, make up your own triangle and try to find the area of it.

PS I did all the pictures on paint, it may take a while to make the graph paper, though.

Still not understanding your math problems? Go to www.6bdmath.blogspot.com.

How to Find Area of a Parallelogram

To find the area of a parallelogram all you need is a ruler and a pencil. First at one point of your shape draw a straight line down, to make it look as if it were a rectangle. You don't have to do it on both sides though. Next you measure that line you drew, and than the base side. Next, you multiply those 2 numbers to get your area.

Still not understanding? Check out www.6bdmath.blogspot.com for all your math troubles.

How to Find Area of a Parallelogram

To find the area of a parallelogram all you need is a ruler and a pencil. First at one point of your shape draw a straight line down, to make it look as if it were a rectangle. You don't have to do it on both sides though. Next you measure that line you drew, and than the base side. Next, you multiply those 2 numbers to get your area.

Still not understanding? Check out www.6bdmath.blogspot.com for all your math troubles.

Tuesday, March 13th

To answer today's question the missing measurement is 8.9 cm, or 89mm.

Finding Perimeter

I was asked which way is easiest for you to find perimeter: length+width+length+width, (2xlength)=(2xwidth), or 2x(length+width.

Iwould have to say that the last one-2x(length+width)-is easiest for me, because it's how I've always done it, and it takes the least amount of steps.