$Area\ =\ \pi r^2$  Find the area of the circle. Radius = 12 cm

 $Area\ =\ \pi r^2$   Find the area of the circle. DIAMETER = 20.  Remember: We need to use the radius to find the area.

 $Area\ =\ \pi r^2$  Find the area of the circle.  DIAMETER = 18 in.  Remember - To find the area we need the radius.

 $Circumference\ =2\pi r$  

Find the RADIUS of the circle. Circumference = 20. Round your answer to 1 decimal place.

 $Circumference\ =\ 2\pi r$  

Find the RADIUS of the circle. The circumference = 100. Round your answer to 1 decimal place.

 $Circumference\ =\ 2\pi r$  

Find the DIAMETER. Circumference = 40. Round your answer to 1 decimal place.  REMEMBER - Diameter is twice as big as the radius.

 $Circumference\ =\ 2\pi r$  

Find the DIAMETER of the circle. Circumference = 31.4 cm. Round your answer to 1 decimal place.  REMEMBER - Diameter is twice as big as the radius.

 $C\ =\ 2\pi r$   $A\ =\pi r^2$  Find the AREA of the circle. The circumference is 100 meters. Remember: Always find the radius first. Round all of your answers to 1 decimal place.

 $A=\pi r^2$   $C=2\pi r$  

The CIRCUMFERENCE of the circle is 18 inches. Find the AREA of the circle. Round all answers to 1 decimal place.  REMEMBER - Always find the radius first.

 $Area\ =\ \pi r^2$  

Find the area of the half-circle. Radius = 5.  DO NOT ROUND YOUR ANSWER.

 $Area\ of\ square\ =\ Base\ x\ Height$   $Area\ of\ Circle\ =\ \pi r^2$  

Find the AREA of the compound shape. Do not round your answer.  Remember - you have HALF of a circle.

 $Area\ of\ Circle\ =\ \pi r^2$   $Area\ of\ recta\eta gle\ =Base\ x\ Height$  

Find the AREA of the compound shape. Remember - you have 1/4 of a circle.

 $Area\ =\ \pi r^2$  

Find the area of the blue shape. Do not round your answer. Remember - you are using HALF-circles.