Circle Terms
Radius and Diameter
Problem Solving
Circumference
Area
100
1. The distance from the center of a circle to the edge of the circle.
2. The distance from one edge of the circle, through the center, to the other edge.
1. What is radius?
2. What is the diameter?
100
The diameter of a circle is 5 yards. What is the radius?
What is 2.5 yards?
100
What is the area in terms of pi?
What is 12.25 pi cm squared.
100
The diameter of a circle is 10. What is the circumference in terms of pi?
What is 10pi?
100
The radius of a circle is 2 feet. What is the area to the nearest hundredth of a foot?
What is 12.57 feet squared?
200
Give two examples for approximations for pi.
3.14
22/7
3.1
200
The Circumference of a circle is 17pi inches. What is the radius?
What is 8.5 inches?
200
What is the area of this semi-circle? (to the nearest hundredth of a centimeter)
What is 76.97 cm squared?
200
The radius of a circle is 6.5. What is the circumference in terms of pi?
What is 13pi?
200
The diameter of a circle is 21 cm. What is the area? (Round to the nearest tenth of a cm.)
What is 415.5 cm squared?
300
1. The distance around the circle.
2. The total amount of space inside of a circle
1. What is circumference?
2. What is Area?
300
The wheel shown travels 4 revolutions. What is the distance traveled by the wheel? (in terms of pi)
What is 40pi?
300
A homeowner decides to put fencing around their circular garden to keep the rabbits out. The garden has a radius of 7.5 feet. The fencing costs $16.89 per foot. How much will the fencing cost? (answer to the nearest cent)
What is $795.92?
300
What is the distance around 3/4 of a pizza pie with a radius of 7inches in terms of pi?
What is 10.5 pi?
300
The area of a circle is 225pi ft squared. What is the diameter of the circle?
What is 30 feet?
400
Explain how to find the perimeter of a semi-circle.
- Find the circumference (Diameter x pi)
- Divide circumference by 2
- Add diameter
400
Given an a circle with an area of 49pi inches squared. Find the diameter.
What is 14 inches?
400
The circumference of a circle is 12.56 cm. What is the area of this same circle? (to the nearest hundredth of a centimeter)
What is 12.55 cm2? or 12.56 cm2
400
What is the perimeter of a garden that is shaped like half of a semi-circle with a radius of 4.5 feet? (answer to the nearest hundredth of a foot)
What is 16.07 feet?
400
What is the area of a slice of pizza that was cut from a pizza pie with a radius of 6inches?
Answer to the nearest hundredth of an inch.
(there are 8 slices per pizza pie)
What is 14.14 inches squared?
500
Jahan starts to walk a circular path with a radius of 13 feet. What distance did Jahan travel if he went around the track 4 1/4 times? Express your answer to the nearest hundredth of a foot.
What is 347.15 feet?
500
What is the perimeter of this semi-circle? (to the nearest hundredth of a centimeter)
What is 35.99 cm?
500
A circle with a radius of 8cm has two smaller circle cut outs, each with a diameter of 4cm. After the two smaller circles are cut out, what is the area that is left of the larger circle? (answer to the nearest hundredth of a centimeter)
What is 175.93 cm squared?
500
A block has 5 trees that are enclosed by fencing in the shape of semi circles with a radius of 3.2 feet. What is the total amount of fencing needed for the entire block? (answer to the nearest hundredth of a foot)
What is 82.27 feet?
500
A circle is drawn inside a larger circle. The circles share the same center. The small circle has a diameter of 11cm, and the diameter of the larger circle is 3cm larger. What is the area of the space in between the circles?
Answer to the nearest hundredth of a centimeter.
What is 58.90 cm squared?