Circumference
What is the formula for finding the circumference of a circle when you know the radius?
C=2𝝅r
What is the formula for finding the area of a circle?
A=𝝅r²
What is the Pythagorean Theorem formula?
a²+b²=c²
What is the name of the line segment from the center of a circle to any point on the circle?
Radius
What is the approximate value of 𝝅 to ten decimal places?
3.1415926535
If the diameter of a circle is 14 cm, what is the circumference?
43.96 cm
Find the area of a circle with a radius of 5 cm.
78.5 cm²
In a right triangle, one leg is 6 units, and the other leg is 8 units. What is the length of the hypotenuse?
10 units
What term describes the distance across a circle through its center?
Diameter
In the video game Fortnite, players have to stay inside a "storm circle" that shrinks throughout the game. If this storm circle has a radius that decreases over time, what happens to its area?
The area decreases
A circular track has a radius of 10 meters. What is the approximate distance around the track, or the circumference?
62.8 meters
A circle has a diameter of 12 inches. What is the area?
113.04 in²
A right triangle has a hypotenuse of 13 cm and one leg of 5 cm. What is the length of the other leg?
12 cm
What is the ratio of a circle's circumference to its diameter called?
Pi 𝝅
On popular social media platforms, the "profile picture" is often enclosed within a circle. If a user wants to fit a square photo into their profile picture, which measurement of the square should they consider to make sure it fits perfectly within the circle?
The diameter of the circle should be at least equal to the length of the square’s diagonal.
A circle has a circumference of 50 cm. What is the radius of the circle?
≈ 7.96 cm
A circular flower bed has an area of 314 square feet. What is the radius of the flower bed?
10 feet
A ladder is leaning against a wall, reaching a height of 15 feet. If the base of the ladder is 9 feet away from the wall, what is the length of the ladder?
≈ 17.5 feet
What is the name of the segment that connects any two points on the circle without passing through the center?
Chord
Pi is an example of what type of number, meaning it has no end and does not repeat?