Honors Geometry:Wednesday, 5-3
Circumference and Area
of Circles
Distance around the outside of a circle ("perimeter" of a circle).
Exact answer:
Leave π in your answer
Round answers to the nearest tenth
(if you use 3.14 instead of π, your
answers will be a little different)
Find the Circumference of a circle with diameter 5 inches.
Exact answer = __________ Rounded = ___________
Find the diameter of a circle with Circumference of 17 feet.
Exact answer = __________ Rounded = ___________
The diameter of a bicycle tire is 30 inches. To the
nearest foot, how far does the tire travel when it
makes 100 revolutions?
The diagram below shows the distances for a track and football
field. Joey runs on the outside lane of the track and Jason runs on
the inside lane of the track. What is the difference in their
distances if they both run once around the track?
Area = the number of square units to cover a figure.
Find the area of a circle with diameter 5 inches.
Exact answer = __________
Rounded = ___________
Find the radius of the face of the lock, using the given information:
Find the area of the shaded region:
Circles: Circumference
Use the diagram to find the indicated measure. Round your answer to the nearest tenth.
Find the perimeter of the regions. Assume the circles in the diagram are congruent and round your
answer to the nearest tenth.
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You have planted a circular garden adjacent to one of the
corners of your garage as shown. About how much fencing
would you need around the outside of the garden?
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Circles: Area
Find the indicated measure. Round to the nearest tenth.
4. The area of a circle is 173 square inches.
Find the radius.
5. The area of a circle is 290 square meters.
Find the radius.
6. The area of a circle is 654 square
centimeters. Find the diameter.
7. The area of a circle is 528 square feet.
Find the diameter.
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Circles ­ Area Worksheet
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