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10
×
Pi is the relationship between a circle's circumference and its diameter. What value can you use to represent pi?
3.14 or 22/7 or 3 as an estimate
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15
×
If the radius of a circle is 18 meters, what is its diameter?
36 meters Did you remember the label?
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trap
No points!
Oops!
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star
Double points!
Okay!
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gift
Win 15 points!
Okay!
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baam
Lose 15 points!
Oops!
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thief
Give points!
5
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25
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fairy
Take points!
5
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20
25
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gift
Win 25 points!
Okay!
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banana
Go to last place!
Oops!
25
×
What is the radius of ONE of the circles shown in the figure above?
6.25 in
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25
×
ESTIMATE the area of the circle shown.
75 cm Did you remember to use the radius?
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5
×
The distance around a circle is called its ________________________.
circumference
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seesaw
Swap points!
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fairy
Take points!
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25
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fairy
Take points!
5
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25
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thief
Give points!
5
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25
10
×
To find the radius of a circle when given its diameter, you have to ________________.
divide by 2
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10
×
To find the diameter of a circle when given its radius, you have to _________________.
multiply the radius by 2 or double it
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20
×
What is the radius of the circle shown in the above figure?
1.5 inches
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banana
Go to last place!
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rocket
Go to first place!
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fairy
Take points!
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25
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thief
Give points!
5
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20
25
15
×
If the diameter of a circle is 17 meters, what is its radius?
8.5 m Did you remember the label?
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25
×
What is the base of the triangle shown?
6 yd You have to double the base, because you are only given half of the length.
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25
×
Describe in words how you would find the area of the shaded figure.
SUBTRACT the area of the triangle from the area of the rectangle.
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15
×
If the radius of a circle is 7.5 centimeters, what is its diameter?
15 centimeters Did you remember the label?
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