What is the name of a line or line segment that goes from the edge of a circle to the middle?
A Radius
100
The diameter of a circle is 10cm. What is the radius of the circle?
5cm
100
If Jessicca drew a perfect circle with a radius of 4.5cm, what would the diameter of that circle be?
9 cm
100
What is the formula for finding circumference in a circle?
C=pi x d
or
C=pi x r x 2
Where pi=3.14
100
What do you call the tool we used to create perfect circles?
A compass.
200
What is the distance across a circle, through its center called?
A diameter
200
what is the formula to find a radius when a diameter is given
r=1/2d
200
Lexi had a new circular pool installed in her backyard. If she walks from the edge of the pool to the middle, she walks 12.5 feet. What is the diameter of the pool?
25 feet
200
Joshua has a round table with a diameter of 5 feet. What is the distance around the outside of the table?
15.7 feet
200
If you take the distance around the outside of every circle and divide by the diameter, what number will you always get?
Pi (3.141592653...)
300
What is the set of all points in a plane that are the same distance from a given point, called the center
circle
300
If Dominic cut down a tree with a diameter of 7 meters, what would the radius of the tree be?
3.5 meters
300
The radius of the circle at half-court in the gym has a radius of 147cm. What is the diameter of that circle?
294 cm
300
Ms. Yoder has a plate with a diameter of 12 inches. What is the circumference of that plate?
37.68 inches
300
From what language do we get the term 'pi'?
Greek
400
What do we call the distance around the outside of a circle?
The circumference.
400
Aliens landed in Roswell and created a circle in the ground that was 56 meters across. What would the radius of that circle be?
28 meters
400
Mr. Farver's dog has a water bowl that has a diameter of 32.40 inches. What is the radius of the bowl?
16.2 inches
400
Anthony bought a large 18 inch pizza at Big Cheese. What is the distance around the outside of the pizza?
56.52 inches
400
**REVIEW**
What is the name of a polyhedron with 5 vertices, 5 faces, and 8 edges?
Square-based pyramid
500
**REVIEW**
What do you call set of numbers and/or variables that contain operation signs, but no equal sign?
An expression
500
What is the formula to find a diameter when a radius is given?
D=2r
500
Mr. Donkersloot has a clock with a minute hand that goes from the middle of the clock to the edge. The minute hand is 16cm long. What is the diameter of the clock?
32 cm
500
Hunter bought new tires for his 4 wheeler. The radius of the tire is 18 inches. What is the circumference of the tire?
113.04 inches
500
**REVIEW**
Solve this problem:
15÷ (2+1) + 36 ÷ 6 x 4