Radius
Diameter
Circumference
Area
Misc.
100

My radius is 15m. What is my diameter? 

30m

100

My radius is 315 feet. What is my diameter? 

630 feet

100

The circumference of a circle is approximately 25.12 inches. What is the circle's diameter? 

8 in 

100

What is the formula to find the area of a circle? 

A= 3.14(r)(r)

100

What is the area of the composite figure? 

28.56 units squared 

200

My radius is 19 yards. What is my diameter? 

38 yards

200

My radius is 16.5 feet. What is my diameter? 

33 feet

200

The diameter of a circle is 2 millimeters. What is the circle's circumference? 

6.28mm

200

The radius of a circle is  7 feet. What is the circle's area? 

153.86 feet sq

200

What is the composite area of a figure? 

98.24 units squared 

300

What is the formula to radius? 

r= d/2

300

What is the formula to find the diameter? 

d=r2

300

What is the formula for finding circumference? 

C= 3.14 ( d) 

C= 2 (3.14) (r) 

300

My radius is 3 km. What is my area? 

28.26km squared

300

It is a line segment that connects a point on the circle to the center; what am I 

radius 

400

My radius is 18.5 km. What is my diameter? 

37km 

400

My radius is 12 inches. What is my diameter? 

24 inches

400

The radius of a circle is 5 yards. What is the circle's circumference?

31.4 yds 

400

The diameter of a circle is 16 inches. What is the circle's area? 

200.96 in squared 

400

I am a line segment that connects two points on the circle and passes through the center; what am I? 

diameter 

500

My radius is 575m. What is my diameter? 


1,150m

500

My diameter is 150 inches. What is my radius? 

75 inches 

500

The circumference of a circle is approximately 20.41 meters. What is the circle's diameter? 

6.5 meters

500

What is the area of a circle whose diameter is 25mm? 

490.625 mm squared 

500

Come to the board and label the parts of a circle.

Radius 

Diameter

Center

Circumference

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