CIRCLES

1
CIRCLES

• CIRCUMFERENCE
• AREA

2
CIRCUMFERENCEC ?d or C 2?r
12cm
3
CIRCUMFERENCEC ?d or C 2?r
32in
4
CIRCUMFERENCEC ?d or C 2?r
The circumferenceof the following circle is
37.68 inches. What is the Diameter?
D ?
5
CIRCUMFERENCEC ?d or C 2?r
The circumferenceof the following circle is 7.85
ft. What is the Diameter?
D ?
6
CIRCUMFERENCEC ?d or C 2?r
The circumferenceof the following circle is 157
cm. What is the Radius?
r ?
7
AREA A ?r2
32cm
8
AREA A ?r2
4.2 ft
9
AREA A ?r2
The area of the following circle is 28.26
ft. What is the radius?
R ?
10
AREA A ?r2
The area of the following circle is 490.625
in. What is the radius?
R ?
11
AREA A ?r2
The area of the following circle is 78.5
cm. What is the Diameter?
D ?
12
Circumference 2?r or ?d AREA ?r2
Find the Circumference and the Area in terms of
??
D 12cm