EMS Homework Help

## Area, Perimeter, and circumference Pi equals 3.14 or 22 sevenths. It will usually be referred to as 3.14
Overview: In this lesson you will learn how to find the area of shapes, the circumference of shapes and the perimeter of shapes.

## How to find the area of shapes

Area: space inside of a shape.
To find area you use the method length times width equals area or L•W=A
Definition: the inside space of a two-dimensional figure.

## What an area problem looks like

Area=Length•Width. Important numbers21 & 53
Fill in variable letters (L,W). L•W=?
53=L
21=W

## How to Find the Perimeter of Shapes

Perimeter: Outer boundary of a shape. (not a circle) To find area you use the method L+W+L+W=P.
Definition:the border or outer boundary of a two-dimensional figure.

## What a perimeter problem looks like

Perimeter=L+W+L+W
Important numbers:73,& 73.
variable numbers. (L,W,L, and W).
Variable problem is L+W+L+W=?
L=50
W=73

50+73+50+73=246 inches
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## How to find the circumference

Circumference: the distance AROUND the circle
Definition:the outer boundary, especially of a circular area; perimeter:
C=pi•diameter Yes, i can see that the diameter is hard to read. The diameter is 48 feet.

## What a circumference problem looks like

2 different ways to find the circumference: pi (3.14) times the diameter,second is 2 times pi (3.14) times radius
Radius is half the size of the diameter and the diameter is 2 times larger than the radius.

## Diameter and Radius example problems

2 ways to find the circumference:
pi•D
pi•R
Option number one example: 3.14•16 (diameter)