Radius
Diameter
Circumference
Area
Semi-Circles
100
Find the radius of the circle
r = 8 m
100
Find the diameter.
d = 9 in
100
Find the circumference.
C = 34.54 in
100
Find the area.
A = 28.26 ft2
100
Find the area
A = 100.48 cm2
200
Find the radius of the circle
r = 9 in
200
Find the diameter.
d = 100 in
200
Find the circumference.
C = 12.56 ft
200
Find the area.
A = 1,384.74 in2
200
Find the perimeter
P = 7.71 ft
300
Find the radius
r = 3.6 m
300
The radius of a circle is 12.6 feet. What is the diameter?
d = 25.2 ft
300
Find the Circumference
C = 6.28 m
300
Find the area.
A = 3,846.5 in2
300
Find the area.
A = 127.17 cm2
400
The circumference of a circle is 18.84 cm. What is the radius?
r = 3 cm
400
The circumference of a circle is 62.8 in. What is the diameter?
d = 20 in
400
The circumference is 47.1 ft. What is the diameter?
d = 15 ft
400
Find the area.
A = 346.185 cm2
400
Find the perimeter.
P = 30.84 cm
500
I have a circular kitchen table with a circumference of 36.11 feet. What is the radius of the table?
r = 5.75 ft
500
Will a circular rug with a circumference of 34.54 feet fit into a room that is 10 feet long?
HINT: FIND THE DIAMETER!
No! The diameter is 11 feet so it is too big.
500
17.27 meters
500
7,536 m2
500
Find the perimeter AND area
P = 5.14 ft
A = 1.57 ft2