Area and Circumference

Find R or D given Circumference

100

C= 18.84 cm. 

Find the Diameter. 

D= 6 cm

200

C=31.4 in

Find the radius.  

r=5

300

C=59.66 m

Find the Diameter.  

d= 19 m

400

C= 84.78 mm

Find the radius.

r=13.5 mm

500

C=398.78 in

Find the the radius.

r= 63.5 in

Circumference

100

Find circumference: When diameter is 10.  

31.4

200

Find Circumference when Diameter - 20

62.8

300

Find Circumference when Radius = 25

157

400

Find Circumference when Radius = 134

841.52

500

Find Circumference when Radius = 75

471

Area- Radius

100

Find Area when Radius = 4

50.24

200

Find Area when Radius = 14

615.44

300

Find Area when Radius = 21

1,384.74

400

Find Area when Radius = 35

3,846.5

500

Find Area when Radius = 50

7,850

Find R or D given the Area

100

A= 113.04 mm² 

Find the radius.

r= 6mm

200

A=314 in² 

Find the radius.  

r=10 in

300

A=615.44 m² 

Find the diameter.  

d= 28m

400

A= 530.66 cm² 

Find the diameter.  

26 cm

500

A=803.84 mm²

Find the radius.  

r= 16mm

Area - Diameter

100

What is the area of a circle with a diamater of 6?

28.26

200

What is the area of a circle with a diameter of 10?

78.5

300

What is the area of a circle with a diameter of 20?

314

400

What is the area of a circle with a diameter of 22?

379.94

500

What is the area of a circle with a diameter of 100?

7,850