Area of Circle and Sectors

What is the area of this circle?
Formula is  $A=\pi r^2$  

• 4π

• 8π

• 16π

• π

What is the area of this circle?
Formula is  $A=\pi r^2$  

• 25π

• 10π

• π

• 5π

What is the area of this circle?
Formula is  $A=\pi r^2$   

• 12π

• 6π

• 144π

• 36π

What is the radius of a circle with an area of 49π?
Area formula is  $A=\pi r^2$  

• 49

• 10

• 7

• 14

Find the area of the sector.
 $A=\pi r^2$  and  $C=2\pi r$  

•  $\frac{100}{360}\cdot\pi\left(12\right)^2$  

•  $\frac{100}{360}\cdot2\pi\left(6\right)$  

•  $\frac{100}{360}\cdot\pi\left(6\right)^2$  

•  $\frac{100}{360}\cdot2\pi\left(12\right)$  

Find the area of the sector.
 $A=\pi r^2$  or  $C=2\pi r$  

•  $\frac{90}{360}\cdot\pi\left(24\right)^2$  

•  $\frac{90}{360}\cdot2\pi\left(12\right)$  

•  $\frac{90}{360}\cdot2\pi\left(24\right)$  

•  $\frac{90}{360}\cdot\pi\left(12\right)^2$  

Find the area of the sector.
 $A=\pi r^2$  or  $C=2\pi r$  

•  $\frac{60}{360}\cdot\pi\left(4\right)^2$  

•  $\frac{60}{360}\cdot\pi\left(2\right)^2$  

•  $\frac{60}{360}\cdot2\pi\left(4\right)$  

•  $\frac{60}{360}\cdot2\pi\left(2\right)$  

What is the area of the shaded sector?
 $A=\pi r^2$  or  $C=2\pi r$  

•  $\frac{65}{360}\cdot\pi\left(34\right)^2$  

•  $\frac{65}{360}\cdot\pi\left(17\right)^2$  

•  $\frac{65}{360}\cdot2\pi\left(17\right)$  

•  $\frac{65}{360}\cdot2\pi\left(34\right)$  

What is the area of the shaded sector?
 $A=\pi r^2$  or  $C=2\pi r$  

•  $\frac{160}{360}\cdot2\pi\left(10\right)$  

•  $\frac{160}{360}\cdot2\pi\left(20\right)$  

•  $\frac{160}{360}\cdot\pi\left(10\right)^2$  

•  $\frac{160}{360}\cdot\pi\left(20\right)^2$  

Find the area of the sector.
 $A=\pi r^2$  or  $C=2\pi r$  

•  $\frac{40}{360}\cdot2\pi\left(9\right)$  

•  $\frac{40}{360}\cdot\pi\left(9\right)^2$  

•  $\frac{40}{360}\cdot2\pi\left(18\right)$  

•  $\frac{40}{360}\cdot\pi\left(18\right)^2$