A line from the center of a circle to the circumference.
100
What is the definition of a diameter?
The distance of a straight line from one side of a circle to the other.
100
What is a formula?
Numbers and symbols that show how to work something out
200
If each side of a square is 4 meters, what is the perimeter?
16 meters
200
James has just made a pie with a diameter of 12 inches. How does he figure out the circumference?
James multiplies 12 by 3 to get 32.
200
How would you find the radius of a circle with the diameter of 24 meters?
Divide 24 by 2
200
If the radius of a circle is 11 inches, what is the diameter?
22 inches
200
What is the formula used to find the diameter (D) when given the radius (R)?
D = R (2)
300
What is the perimeter of a rectangle with one side being 12 inches and the other 4?
32 inches
300
A circle has a 83 inch diameter, what is the circumference?
239 Inches
300
The diameter of a circle is 86 feet. What is the radius?
43 feet
300
Peter wants to jump across the circular pond but isn't sure how far it is across. He knows the circumference is 21 feet. How far is it from one side to the other?
7 feet
300
What is the formula to figure out the circumference (C) of a circle when given the diameter (D)?
C = D (3)
400
What is the difference between perimeter and circumference?
Perimeter measures the distance around a figure and circumference measures the distance around a circle.
400
A circle has a radius of 21 Meters. What is the circumference?
126 Meters
400
A circle has a diameter of 340 inches. What is the estimated radius?
170 inches
400
Jenny baked a pie and Joe wants to know how long half of the will be so he can put left overs in a container. Jennys knows that the pie is 4 inches from the side to the middle and the distance around the outside of the pie is 24 inches. How long is it from one side of the pie to the other?
8 inches
400
Given this formula, find the circumference:
D = 20
C = D (3)
C = 60
500
Carol is planting flowers around her yard and doesn't know how many feet of flowers she needs. The front side of her yard is 53 ft, the right side is 64 ft, the back is 58, and the left is 67. How many feet of flowers does Carol need?
242 feet
500
Mr. Jones has a new circular pool in his backyard. The pool has a radius of 17 feet. What is the circumference?
102 Inches
500
A circular house was recently built on Sheridan Rd. This house has a circumference of 330 feet. What is the radius of this house?
55 feet
500
Circle A has a radius of 7 inches. Circle B is twice as big as circle A. What is the diameter of circle B?
14 inches
500
What is the formula of the circumference (C) given the radius (R)?