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MATHEMATICS OBJECTIVE
Students will be able to:
Find the area of a circle.
Use the area of a circle to find the radius and diameter.
Solve problems involving the area of a circle.
ESSENTIAL UNDERSTANDING
The formula for the area of a circle, A = πr², can be used to solve problems by substituting the known values for area (A) or radius (r) to solve for the missing variable.
I can find the area of a circle
I can use the area to find the radius and diameter.
I can solve problems involving the area of a circle.
FINDING THE AREA OF A CIRCLE
You can find the area, A, of a circle using the formula A = πr², where r is
the radius.
A = πr²
Common approximations for π are 3.14 and 22/7.
DIAGRAM DESCRIPTION
An orange shaded circle has a black center point. A green line labeled r
extends from the center to the circle's edge, illustrating the radius.
The diagram shows the area formula A = πr².
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