Circular Parts
Circumference: The Distance Around the Round
Area: Pie are squared or Pie is squared?
Tris and Quads
100

This is the distance between the center of a circle and any point on the circle. 

What is radius?

100

The circumference to the diameter equals what decimal number (round to the nearest hundredth) 

3.14

100

what is the formula to find the area? 

πr2

(pi)(r)2

100

What is the area formula for triangle? 

1/2 BH

200
The radius extends from what point of the circle? 

Center or origin 

200

What is the circumference of a circle with a radius of 10 feet.

62.8 feet

200

What is the area of a circle with a radius of 20 feet.

1256 ft2

200

Mrs. Chung has a garden that is 11 x 4ft. She wants to install fencing around it to protect her garden. How much fencing does she need? 

We need to find the perimeter:


11+11+4+4=30 feet

300

What is the line that contains the center of the circle and two points on opposite sides of the circle.  

The diameter
300

The circumference of a circle with a radius of 25 centimeters.

What is 157 centimeters?

300

What is the area of a circle with a diameter of 10 in.

78.5 in2

300

What is the area of the dimensions of this triangle. 

height: 4in

base: 6in

side: 10in

1/2 bh or bh/2


4(6)/2=12 in

400


pi is the ratio for ____________: __________

circumference:diameter

400

What is the diameter of a circle with a circumference of 47.1 inches.

 15 inches

400

What is the area of a circle with a diameter of 154 cm?

18,617.06 cm2

400

A square has an area of 36 in2.

What is the length of its' sides? 

6in

500

The radius is ______ the diameter.

a. twice

b. quarter

c. half

d. equal to

c. Half
500

What is the radius of a circle with a circumference of 125.6 millimeters.

20 millimeters

500

What is the radius of a circle with an area of 28.26 ft2.

3 feet

500

A rectangle has a perimeter of 32 cm. 

It's area is 55 cm2.

What are the dimensions of this rectangle? 

11 cm x 5cm or 5 cm x 11 cm



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