Circles, Circles, Circles!

Circle Terms

100

The distance from the center of a circle to the outside, also half of the diameter

What is radius

200

The longest part in a circle. From one edge to the other through the center. 

What is the Diameter

300

The distance around the circle.

What is circumference?

400

The total amount of space inside of a circle

What is the area?

500

3.14 or 22/7

What is pi?

Finding Radius

100

The Diameter of this circle is 5 m

What is 2.5 m?

200

The diameter is 12 ft.

What is 6 ft. ?

300

The diameter of this circle is 27 cm

What is 13.5 cm?

400

The diameter of this circle is 437 m

What is 218.5 m?

500

The circumference is 25.12 in.

What is 4 in?

Finding Diameter

100

The radius of this is 5 ft

What is 10 ft?

200

The radius of this circle is 2.5 km

What is 5 km?

300

The radius of this circle is 15.7 mi

What is 31.4 mi?

400

The circumference of this circle is 18.84 in

What is 6 in?

500

The circumference of this circle is 194.68 cm.

What is 62 cm?

Finding Circumference

100

The diameter for this circle is 10 m

What is 31.4 m?

200

The diameter for this circle is 13 ft

What is 40.82 ft?

300

The diameter of this circle is 25 cm

What is 78.5 cm?

400

The radius for this circle is 45 mm

What is 282.6 mm?

500

The radius is 12.5 mm.

What is 78.5 mm?

Finding Area

100

The radius of this circle is 2 ft

What is 12.56 ft²?

200

The radius of this circle is 3 m

What is 28.26 m²?

300

The radius of this circle is 21 mm

What is 1384.74 mm²?

400

The diameter is 30 ft. 

What is 706.5 ft²?

500

The circumference is 25.12 in.

What is 50.24 in²?