Measurements!

Perimeter

What is perimeter?

Perimeter is the distance or length around any shape or object

Measuring Perimeter: If you have an object and there are given lenghths around all sides than you can simply add up all number to find the total lengh around the ouside of the object.

The Pythagorean Theorum

Basic Definition:

a2+b2=c2

What is the hypotenuse?

The longests side of a right-angled triangle

Slant Height vs. Perpendicular Height

Slant height

Perpendicular height

Labeling Units

Perimeter: labeled with the units in which you are measuing in. Example: meters, inches, centimeters

Area: Your answer must be in units squared

Volume: Since you are finding the inside of a 3D object your answer must be cubed

Surface Area: same as area. Answer must be in units squared

Volume

Helpful website that shows all formulas!!

When measuring rectangular prisms or cubes you take the length x width x height

Surface Area Of All Shapes

Formulas

Song To Help Remember Formulas

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The 4 "W's" of Measuring

1) WHY? Why do we measure?

2) WHERE? Our why helps us determine the where. Where are you measuring? Area, perimeter, volume, etc.

3) WHAT? What tool will you use?

4) hoW? How will you measure? (Repeating a unit with no gaps or overlaps). See how many units instead of seeing where you stop measuring.