Area and Circumference of Circles

 $Use\ \ the\ \ formula\ \ \ A=\pi r^2\ \ to\ \ find\ \ the\ \ area$  
  $\pi=3.14$  

(a)  

Tags

CCSS.7.G.B.4

 $\pi=3.14$   $Use\ the\ formula\ A=\pi r^2\ \ \$  

(a)  

Tags

CCSS.7.G.B.4

 $\pi=3.14$   $Use\ the\ formula\ A=\pi r^2$  

(a)  

Tags

CCSS.7.G.B.4

 $Use\ the\ formula\ C=\pi d\ or\ C=2\pi r$   $\pi=3.14$  

(a)  

Tags

CCSS.7.G.B.4

 $Use\ either\ A=\pi r^2\ or\ C=\pi d\ \ \ \ \ \ \pi=3.14$  

How far would the penny roll ONE rotation?

(a)  

Tags

CCSS.7.G.B.4

 $Use\ either\ C=\pi d\ or\ C=2\pi r\ \ \ \ \pi=3.14$  

(a)  

Tags

CCSS.7.G.B.4

 $What\ part\ of\ the\ circle\ is\ \ \overline{AB\ }\ \ ?$  

• diameter

• radius

• center

• chord

Which a radius of the circle?

• $\overline{AB}$

• $\overline{CD}$

• $\overline{PO}$

• $O$

 $Use\ A=\pi r^2$   $Find\ the\ area\ of\ the\ circle\$  

(a)  

Tags

CCSS.7.G.B.4

Find the circumference of the circle. 
 $Use\ either\ C=\pi d\ or\ C=2\pi r$  


(a)  

Tags

CCSS.7.G.B.4