11. Circle Review (Parts, Circumference, Area, Circumference Backwards, Circumference→Area)
12.1 cm
11. The circumference of a circle is 38 cm. What is the length of the diameter, to the nearest tenth?
7 in
12. The circumference of a circle is 14π in. What is the length of the radius?
196π ft²
13. The circumference of a circle is 28π ft. What is the area of the circle?
38 cm
10. The circumference of a circle is 38π cm. What is the length of the diameter?
144π m²
14. The circumference of a circle is 24π m. What is the area of the circle?
19 in
15. The circumference of a circle is 119.3 inches. We would like to find this circle's area. Therefore, we need the circles radius to plug in! IF THE CIRCUMFERENCE OF THE CIRLCE IS 119.3 INCHES, WHAT IS THE LENGTH OF THE CIRCLES RADIUS? (round to nearest whole)?
1,132.6 in²
16. The circumference of a circle is 119.3 inches. What is the area of this circle, to the nearest tenth?
9,151 cm²
17. A circular canvas has a circumference of 339.1 cm. How much space to do have on the canvas to paint? Round to the nearest square centimeter.
Circumference
18. If I tell you the distance around a circle, what information did I give you?
Area
19. If I tell you to find the space inside a circle, what am I asking you to find?
25π m²
2. Find the exact area of a circle with a diameter of 10 m.
12.5 in
20. If the diameter of a circle is 25 inches, what is the radius?
169π in²
3. How much space is inside of a circle with a radius of 13 inches?
5π m
4. What is the distance around a circle with a diameter of 5 meters? Express your answer in terms of π.
498.76 in²
5. How much space is inside of a circle with a radius of 12.6 inches? Round your answer to the nearest hundredth.
121π cm²
6. A toy car has wheels that have a 22 cm diameter. EXACTLY how much space does the wheel take up?
132.73 in²
7. How much space is INSIDE of a 13 inch pan? Round to the nearest hundredth.
40.84 inches
8. What is the length AROUND a 13 inch pan? Round to the nearest hundredth.
30π feet
9. What is the exact length around a merry go round with a radius of 15 feet?
9π cm²
1. Find the exact area of a circle with a radius of 3 cm.
