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Pearson Geometry Common Core, 2011

PG

Pearson Geometry Common Core, 2011 View details

3. Biconditionals and Definitions

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Exercise 50 Page 104

Do you remember the formula for finding the area of a circle?

I

Practice makes perfect

We will find the area of a circle. To do that, we need the radius of the circle. We can find its radius by dividing the diameter by 2. r=d/2 ⇒ r=6cm/2= 3 cm Now, we are able to find its area.

A=π r^2

r= 3

A=π( 3)^2

Calculate power

A=π * 9

Multiply

A=9π

The area of the circle is 9π cm^2. Therefore, answer I is correct.

Subchapter links

Lesson Check p.101

Practice and Problem-Solving Exercises p.101-104

Standardized Test Prep p.104

Mixed Review p.104