Vocab
The distance from the center of a circle to the outside, also half of the diameter
What is radius
What is 45 degrees?
The radius of this circle is 5 feet. What is the diameter
What is 10 feet
The radius of this circle is 2 inches. Determine the area
What is 12.56 inches squared
Identify AREA OR CIRCUMFERENCE & what are the key words?
You buy a circular rug with a diameter of 8 feet. How much floor space will the rug cover?
What is area?
Key words= space
The area of a circle is 488 square miles. What is the radius? Round to the nearest tenth if needed.
The length across the circle through its center
What is the Diameter
Angles that have a linear relationship add up to what?
What is 180 degrees?
The radius of this circle is 2.5 inches. Name the diameter
What is 5 inches
The radius of this circle is 3 cm. Determine the area
What is 28.26 cm squared
Identify AREA OR CIRCUMFERENCE & what are the key words?
Sue had a circular picture that she wanted to frame. If the picture’s diameter was 7.5 inches, how much framing material did she need?
What is circumference?
Keywords = frame
The circumference of a circle is 300 feet; what is the diameter? Round to the nearest integer. (Use 3.14 as pi.)
Diameter is 96 feet
Two angles that are across from each other with intersecting lines
What are vertical angles?
There are two vertical angles. One is 6x degrees, the other is 156 degrees. What does x equal to?
What is 26
The diameter of this circle is 65 cm. Name the radius
What is 32.5 cm?
A Ferris Wheel has a radius 65 feet, what is the circumference?
What is 408.2 feet?
The diameter of this circle is 21 m. Find the area
What is 346.185 m squared
Tommy wanted to hang a circular poster on his wall. If the radius of the poster is 2 feet, how much space will the poster take up on the wall?
What are the key words?
What is area?
Keywords = spaces
What is about 60 feet of elastic to fix the pool cover.
Two angles that have a sum of 90 degrees
What is the complementary angles?
Angle A and B are supplementary. Angle A is 5x + 15 degrees. Angle B is 36 degrees. Solve for x.
What is 25.8 ?
The circumference of this circle is 15.7 cm. Name the diameter
What is 5 cm
The diameter of a quarter is 24 mm. Find the circumference
What is 75.36 mm
Martin ordered a pizza with a 16-inch diameter. Ricky ordered a pizza with a 20-inch diameter. What is the approximate difference in area of the two pizzas?
What is 113 square inches difference?
Identify AREA OR CIRCUMFERENCE & what are the key words?
Johnny wrapped a piece of string around a can of soup. If the soup’s diameter is 4 inches, how long was the string Johnny used to wrap around it?
What is circumference?
Key words = around
The student is cutting 10 circles out of a paper with a diameter of 20 centimeters. How much paper will be needed to cut all the circles out? Round to the nearest tenth if necessary. (Use 3.14 for pi)
3,140 centimeters of paper will be needed.
The constant ratio between a circle's circumference and its diameter
What is pi?
Angle B and angle C are complementary. If angle B is five times the size of angle C write an equation that can be used to find the measure of angle C?
What is 5x + x = 90
The area of this circle is 113.04 cm squared. What is the radius?
What is 6 cm
If a pancake has a circumference of 34.54 cm. What is the diameter of the pancake?
What is 11 cm
A sprinkler waters in a circular pattern, spraying water out 3.2 meters. How much surface will it water?
What is 32.15 meters squared
Identify AREA OR CIRCUMFERENCE & what are the key words?
A wheel has a diameter of 8 inches. What is the perimeter of the wheel?
What is circumference?
Key words = perimeter
A circle has the circumference of 3,600 square kilometers. What is the area of the circle? Round to the nearest hundredth if necessary. (use pi key)
1,031,331.97 square kilometers