Circles: Circumference & Area - Flocabulary
Name: _________________________________________________ Date: _____________
Circles: Circumference & Area 1. What is the formula for circle area?
2. What is the formula for circumference?
3. D = ___ r
5.
C
4.
= 4 31 ft
r = 5 in r = 5 in
r=
D=
D=
A=
A=
C=
C = 314 ft
6.
7. r= A = 78.5 in2
D=
r= D = 12 cm
D = 12 cm
A = 78.5 in2
A=
C=
C=
Jack orders a pizza with a 20-inch diameter for a party. 8. What is the length of each slice? 9. What is the area of the whole pizza? 10. Each person wants a slice of pizza that is at least 36 in2. What is the greatest number of pizza slices Jack can cut?
Circles: Circumference & Area 1. What is the formula for circle area?
2. What is the formula for circumference?
3. D = ___ r
5.
C
4.
= 4 31 ft
r = 5 in r = 5 in
r=
D=
D=
A=
A=
C=
C = 314 ft
6.
7. r= A = 78.5 in2
D=
r= D = 12 cm
D = 12 cm
A = 78.5 in2
A=
C=
C=
Jack orders a pizza with a 20-inch diameter for a party. 8. What is the length of each slice? 9. What is the area of the whole pizza? 10. Each person wants a slice of pizza that is at least 36 in2. What is the greatest number of pizza slices Jack can cut?
