I am equal to half of the diameter. I am a line that joins the centre point to the circumference. What am I called?
Radius
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trap
No points!
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star
Double points!
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fairy
Take points!
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thief
Give points!
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15
Pi is equal to the ratio of the ____________ of a circle divided by its ____________.
Circumference, diameter
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5
It is a middle point inside the circle.
The centre of the circle
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15
Which circle has a greater circumference, (OPTION 1) a circle with a diameter of 10 or (OPTION 2) a circle with a radius of 6?
Option 2
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10
What is the formula for area of a circle?
Ï x radius x radius
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15
If a circle has a radius of 8 centimeters, approximately what is its circumference? Use 3.14 for pi
50.24 cm
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10
A round jar lid has a radius of 3 centimeters. What is the lid's area? Take Ï = 3.14
28.26cm2
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15
The dirt on a baseball field is in the shape of a quarter circle. If the radius of the quarter circle is 10 meters, how much area does the dirt cover? Take Ï= 3.14
78.5 m2
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15
Find the area of the semicircle. Take Ï = 3.14
56.52 cm2
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15
What are the values that we usually use for pi? (State the 2 of them)
3.14 and 22/7
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seesaw
Swap points!
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fairy
Take points!
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gift
Win 25 points!
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banana
Go to last place!
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15
I am a part of the circle that looks like a slice of cake or a slice of pizza. I am called a ___________.
Sector
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seesaw
Swap points!
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magnet
Take 20 points!
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fairy
Take points!
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banana
Go to last place!
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15
I am a straight line that goes from one side of the circle to the other through the centre point. What am I called?
Diameter
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15
If the diameter of the circle is 8cm, what is its area? Take Ï= 3.14
