Year 1 Lesson 19 In-class Exercise

Name ________________________

1). Find the circumference (C) of circles with the following: (use 3.14 for )

a). DIAMETER (D) = 5 inches.

C = ________


 b). DIAMETER (D) = 4 feet..

C = ________

c). DIAMETER (D) = 12 inches.

C = ________


 d). DIAMETER (D) = 20 cm.

C = ________

e). RADIUS (R) = 15 feet

C = ________


 f). RADIUS (R) = 10 m..

C = ________

g). RADIUS (R) = 100 inches

C = ________

2). Find the circumference of these circles: (use 3.14 for )
a).


C = __________

 b).


C = __________

c).


C = __________

 d).


C = __________