Vocabulary
Radius and Diameter
Area and circumference in terms of pi
Area and circumference using 3.14 for pi
Challenge
100
The line that goes across a circle through the middle is called what?
Diameter
100
If the diameter is 13, what is the radius?
r = 6.5
100
What is the circumference of a circle in terms of pi with a diameter of 22?
C = 22TT
100
What is the circumference of a circle with a radius of 10?
c = 62.8
100
The Circumference of a circle is 28.26 inches. What is the diameter?
d = 9
200
What is the distance around a circle called?
Circumference
200
If the radius is 15, what is the diameter?
d = 30
200
What is the area of a circle in terms of pi with a radius of 3?
A = 9TT
200
What's the area of a circle with a diameter of 12?
A = 113.04
200
The area of a circle is 50.24 square inches. What is the radius?
r = 4
300
What are you calculating when finding the measure of the inside of a circle?
Area
300
C = 5TT What is the diameter?
d = 5
300
What is the circumference of a circle with a radius of 8 in terms of pi?
C = 16TT
300
What is the area of a circle with a radius of 3.56 rounded to the nearest thousandth place?
A = 39.795
300
What is the perimeter of this half-circle?
23.13 cm
400
The distance from the outer edge of the circle to the center point is called what?
Radius
400
A = 25TT. What is the radius?
r = 5
400
What is the area of a circle with a diameter of 8 in terms of pi?
A = 16TT
400
If the circumference of a circle is 14TT, what is the area?
A = 153.86
400
What is the area of the shaded portion of the figure?
A = 13.76
500
What do you get when dividing the circumference of a circle by it's diameter?
Pi
500
A = 49TT. What is the diameter?
d = 14
500
If the circumference is 10TT, what is the area in terms of pi?
A = 25TT
500
If the area of a circle is 25TT, what is the circumference?
C = 31.4
500
A wheel with a radius of 35 cm rotates 100,000 times. How far does the wheel travel?
21,980,000 cm