1.8 - Perimeter, Circumference, and Area

Presentation

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Mathematics

•

8th - 11th Grade

•

Hard

•

CCSS

7.G.B.4, 4.MD.A.2, 3.MD.C.7B

Standards-aligned

Steve Dull

Used 26+ times

FREE Resource

9 Slides • 7 Questions

1.8 - Perimeter, Circumference, and Area

by Steve Dull

Today's Objectives:

To find perimeter or circumference of basic shapes
To find area of basic shapes

Important Terms

The perimeter (P) of a polygon is the sum of the lengths of its sides
The area (A) of a polygon is the number of square units it encloses.

Formulas

Important!

When measuring area, use square units such as square inches, square feet, square miles.

Fill in the Blanks

Your yard measures 20 feet long by 30 feet wide. How much fence would you need to enclose the yard on four sides?

Type answer...

Fill in the Blanks

Your yard measures 20 feet long by 30 feet wide. You are buying a bag of fertilizer to cover the entire yard. What is the area of your yard?

Type answer...

Circumference

Fill in the Blanks

A circle has a radius of 4 cm. What is its circumference? Use 3.14 for $\pi$ . Round your answer to two decimal places.

Type answer...

Tread carefully

Be sure to make note of whether you are given radius or diameter in the problem - the circumference formula uses diameter so if you need the radius you'll have to double it.

Fill in the Blanks

Type answer...

Fill in the Blanks

A giant pizza at your neighborhood pizza place has a diameter of 18 inches. What is the area of the pizza? Give an exact answer in terms of pi

Type answer...

We can also find area of figures with irregular shapes

Let's try one...

Fill in the Blanks

Find the area of the figure:

Type answer...

Poll

Select the image that best shows how well you think you understand area, perimeter, and circumference:

1.8 - Perimeter, Circumference, and Area

by Steve Dull

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