Round 1
If diameter = 2 x radius, what is the diameter if the radius is 8?
What is 16?
If circumference = 3.14 x diameter, what is the circumference if the diameter is 7?
What is 21.98?
Diameter = ? cm
What is 14?
If area of a circle is 3.14 x r x r
Radius = 6 cm
Area of circle = ______
What is 113.04 cm2?
Rim, Valve, Spoke, Hub, Tire
What is a bike wheel?
If diameter = 2 x radius, what is the diameter if the radius is 24.5?
What is 49?
If circumference = 3.14 x diameter, what is the circumference if the diameter is 5.5?
What is 17.27?
Radius = 7 cm
Circumference = ? cm
What is 43.96?
Radius = 10 cm
Area of the circle:
What is 314?
Dial, Case, 2 Hands, Main Wheel, Escape Wheel
What is a clock?
If radius = diameter/2, what is the radius if the diameter is 4?
What is 2?
Diameter = 8
Circumference = ?
What is 25.12?
Radius = ?cm
What is 6?
diameter = 24 m
area of the circle: ______
What is 452.16 m2?
Mint mark, date, field, rim, edge, denomination, motto
What is a coin?
Diameter = 15
Radius = ?
What is 7.5?
Diameter = 12
Circumference = ?
What is 37.68?
Diameter = 12 cm
Circumference = ? cm
What is 37.68?
diameter = 36 km
area of the circle:
What is 1017.36 km2?
Base, sauce, toppings, cheese
What is a pizza?
Radius = 10
Diameter = ?
What is 20?
Circumference = 31.4
Diameter = ?
What is 10?
What is another way to represent 3.14?
What is pi, 22/7 or pi symbol?
Radius = r
Area of the circle
What is 3.14 x r x r
What is a record?