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Circle Vocab
Finding Radius and Diameter
Finding Circumference
Finding Area
Mixed
100
The distance from the center of a circle to the outside, also half of the diameter
What is radius
100
The Diameter of this circle is 5
What is 2.5
100
The diameter for this circle is 10
What is 31.4
100
The radius of this circle is 2
What is 12.56
100

A rug has a diameter of 2 feet.  What is the distance around the outside?

6.28ft

200

The distance from side to side of a circle through the center

What is the Diameter

200

The radius is 5. What is the diameter?

10

200
The diameter for this circle is 13
What is 40.82
200
The radius of this circle is 3
What is 28.26
200

Mr. Sal put a circular garden in his backyard with a diameter of 15 feet.  He wants to put flowers along the outside.  How many feet of flowers does he need?

47.1 feet

300

What is the distance around the outside of a circle called?

Circumference

300

The radius is 13.5. What is the diameter?

What is 13.5

300
The diameter of this circle is 25
What is 78.5
300
The radius of this circle is 21
What is 1384.74
300

Susan designed a circular pool that measures 24 feet across.  What is the area of the bottom of the pool?

452.16 ft squared

400
The total amount of space inside of a circle
What is the area?
400

The diameter of this circle is 437. What is the radius?

What is 218.5?

400
The radius for this circle is 45
What is 282.6
400
The radius of this circle is 15
What is 706.5
400

Jane needs to buy mulch for her garden.  It measures 18 yards from one side to the other.  How many yards squared of mulch does Jane need to buy?

254.34 yards squared of mulch

500
3.14
What is pi?
500
The diameter of this circle is 0.325
What is 0.1625
500
The radius for this circle is 25
What is 157
500
The radius of this circle is 20
What is 1256
500

A circular racetrack has a diameter of 1/2 a mile.  How far is it around the whole track?

1.57 miles