Circle Terms
The distance from the center of a circle to the outside, also half of the diameter
What is radius
The Diameter of this circle is 10. What is the radius?
5
The radius of this is 5. What is the diameter?
What is 10
The radius of a circle is 5 cm. Find its area in terms of pi.
25pi
The circumference of a circle is 4pi ft. Find its radius, in feet.
2 ft
The longest part in a circle. From one edge to the other through the center.
What is the Diameter
The diameter is 15. What is the radius?
6
The radius of this circle is 2.5. What is the diameter?
What is 5
The circular mirror hanging on Nate's wall has a diameter of 18 inches. What is the mirror's area?
254.34 square inches
The circumference of a circle is 5pi cm. Find its radius, in centimeters.
2.5 cm
The distance around the circle.
What is circumference?
What type of number is
π
irrational
242
The longest part in a circle. From one edge to the other through the center.
Diameter
The radius of a circle is 9 ft. Find its circumference in terms of pi
18pi
Circles that are the same shape and size are _________
congruent
The diameter of this circle is 437. What is the radius?
218.5
The radius of this circle is 18.84. What is the diameter?
What is 37.68
A bedroom has a circular rug. According to a small tag, the rug has a circumference of 12.56 yards. What is the rug's area?
12.56 square yards
Clarke's Toy Store is selling a hula-hoop with a diameter of 26 inches. What is the hula-hoop's circumference?
Use 3.14 for 𝜋. If necessary, round your answer to the nearest hundredth.
81.64 inches
A collection of points on the same plane equidistant from the same point.
Circle
9
The radius of this circle is 194.68. What is the diameter?
What is 389.36?
26
Tommy has trained his puppy, Fluffy, to jump through a ring with a radius of 1 foot. What is the ring's circumference?
6.28 ft