Show:
Vocab & Formulas
Diameter/Radius
Circumference
Area
In Terms of Pi
100

What is the formula for the area of a circle?

A = pi(r)2

100

What is the diameter of a circle with a radius of 7 cm?

d= 14 cm

100

What is the circumference of a circle with a radius of 2mm?

C = 12.56mm

100

What is the area of a circle with the radius of 4in?

A = 50.24in2

100

The diameter of a circle is 8 m.

Find the CIRCUMFERENCE in terms of pi.

C = 8pi

200

What is the formula for the circumference of a circle?

C = d(pi) 

200

What is the radius of a circle with a diameter of 88in?

r=44in

200

C = 678 yds

What is the radius?

Round to the nearest whole number

108 yds

200

What is the area of a circle with a radius of 30 ft.

2826 ft2

200

The radius of a circle is 9 feet.

Find the AREA in terms of pi.

A = 81pi

300

A revolution is another way of describing what?

Circumference

300

use 3.14 for pi; round to the hundredths if necessary.

C= 66 ft

d= ________

r= ________

d= 21.02 ft

r= 10.51 ft

300

If the diameter of a circle is 5 in what is the circumference?

C = 15.7 in

300

The area of a circle with a 66in diameter is ___. 

3,419.46 in2

300

The radius of a circle is 3 cm.

Find everything else. (diameter, area, circumference)

IN TERMS OF PI

d = 6 cm

A = 9pi

C = 6pi

400

If you are putting in new carpet, you would need to find the what of your room?

Area

400

What is the diameter of a circle with the circumference of 7mm?

Round to the nearest hundredths.

d= 2.23mm

400

A bike wheel has a radius of 12 in.

How far does the bike travel with each revolution?

75.36 in

400

What is the area of the base of an 8in cake pan?

50.24 in2

400

The radius of a circle is 2 cm.

Find everything else. (diameter, area, circumference)

IN TERMS OF PI

d = 4

A = 4pi

C = 4pi

500

Diameter is _____ times the radius?

Radius is ______ times the diameter?

2 times 

1/2 times

500

What is the diameter of a circle that has the circumference of 120ft? Round to the nearest hundredth.

d= 38.22 ft

500
A large pizza has a diameter of 18 in.

A medium pizza has a diameter of 14 in. 


What is the difference betweeen their circumferences?

12.56 in

500

What is the area of a circle with a circumference of 12.56yd?

12.55yd2

500

The radius of a circle is 7 cm.

Find everything else. (diameter, area, circumference)

IN TERMS OF PI

d = 14 cm

A = 49pi

C = 14pi