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Geo 9.2 day1 Area of Circles
Contributed by: DiLaura
(Original author: Lehnert)

Find the area of a circle that has a

radius of 5 feet.  Round your answer

to the nearest hundredth.

square feet

 

Find the circumference of a circle with a radius

of 5 feet.  Round to the nearest hundredth.

feet

Find the radius of a circle that has an

area of 100π ft2


ft

A circle has a circumference of 6 cm.  Find the

diameter and leave the answer in terms of pi.

6/π cm

3/π cm

6π cm

3π cm

A circle has a diameter of 3/π.  Find the

circumference of the circle.

3/π cm

3π cm

1.5 cm

3 cm

Find the area of a circle with a circumference
of 22π cm.
11π in2
121π in2
121π2 in2
22π in2
Find the circumference of a circle with an area
of 225π cm2.
15π in
30 in
112 π in
30 π in

A circle has a radius of 3x cm.  Find the

diameter, circumference, and area of the circle.


diamter =
C = 6xπ,  A = 12xπ
C = 6xπ,  A = 9x2π
C = 12xπ, A = 36xπ2
C = 6x2π ,  A = 12x2π
Find the diameter of a circle with an area
of 196π in2.
14π in
14 in
28 in
30 in
Find the radius of a circle with a
circumference of 64π in.
32 in
8 in
8π in
32π in
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