Circle Vocabulary
This line goes from the center of the circle to the edge.
What is the radius?
A pizza has radius 4 inches.
What is the area in terms of π?
A. 16π
B. 8π
C. 4π
What is 16π?
A hula hoop has radius 10 cm.
Using π = 3, what is the circumference?
A. 30
B. 60
C. 20
What is 60 cm?
A rectangle (8 × 5) and triangle (base 4, height 6).
Find total area.
What is 40 + 12 = 52?
What is Spongebob's house made out of?
Pineapple
This line goes all the way across the circle through the center.
What is the diameter?
A round clock has diameter 10 cm.
What is the radius?
What is 5 cm?
A round pool has diameter 12 ft.
What is the circumference?
What is about 37.68 ft?
A rectangle (10 × 6) with half circle (radius 3).
Find rectangle area only.
What is 60?
In this sport, athletes compete to see who can run, jump, and throw the farthest or highest.
What is track and field?
This is the distance around a circle.
What is circumference?
A trampoline has radius 5 ft.
Which is closest to the area?
A. 78.5 ft²
B. 31.4 ft²
C. 25 ft²
What is 78.5 ft²?
A circular garden bed has radius 7 m.
Find circumference.
What is about 43.96 m?
A toy shape:
Rectangle 9 × 4
Trapezoid below (bases 6 & 4, height 3)
What is 36 + 15 = 51?
Fastest Man in the World’ holds the world record for the fastest 100-meter dash
Who is Usain Bolt?
A circular garden has a diameter of 8 ft.
Which expression represents π?
A. 8 ÷ C
B. C ÷ 8
C. 8C
What is C ÷ 8?
A circular plate has radius 3 cm.
Using π = 3.14, what is the area?
What is 28.26 cm²?
A circular table has circumference 31.4 inches.
What is the diameter?
What is 10 inches?
A mat is made of:
Rectangle (7 × 5)
Triangle (base 6, height 4)
Find combined area.
What is 35 + 12 = 47?
What kind of fish is Nemo?
What is a clownfish?
A round fountain has circumference 24 meters and diameter 6 meters.
Which expression shows π?
A. 24 ÷ 6
B. 6 ÷ 24
C. 24 × 6
What is 24 ÷ 6?
Two circles:
Big circle radius = 6 cm
Small circle radius = 3 cm
What is the area of the small circle?
A. 9π
B. 18π
C. 36π
What is 9π
Which formula finds circumference?
A. πr²
B. 2πr
C. bh
What is 2πr?
A basketball court:
Rectangle 20 × 10
Half circle radius 5
Which formula finds rectangle area?
A. b + h
B. bh
C. πr²
What is bh?
What is Michael Jordan's famous movie?
What is Space Jam