Circle
(the database of solved problems)
All the problems and solutions shown below were generated using the Circle Calculator.
| ID |
Problem |
Count |
| 51 | Find the area $ A $ of a circle if radius $r = 5$. | 5 |
| 52 | Find the radius $ r $ of a circle if circumference $C = 9$, radius $r = 4$ and diameter $d = 8$. | 5 |
| 53 | Find the area $ A $ of a circle if diameter $d = 25.2\, \text{mm}$. | 5 |
| 54 | Find the area $ A $ of a circle if radius $r = 3.8\, \text{cm}$. | 5 |
| 55 | Find the area $ A $ of a circle if radius $r = 3.8\, \text{mm}$. | 5 |
| 56 | Find the area $ A $ of a circle if radius $r = 5.4\, \text{cm}$. | 5 |
| 57 | Find the area $ A $ of a circle if radius $r = 5.7\, \text{cm}$. | 4 |
| 58 | Find the area $ A $ of a circle if radius $r = \sqrt{ 13 }\, \text{mm}$. | 4 |
| 59 | Find the area $ A $ of a circle if area $A = 2826\, \text{mm}^2$, circumference $C = 188.4\, \text{cm}$, radius $r = 30\, \text{cm}$ and diameter $d = 60\, \text{cm}$. | 4 |
| 60 | Find the area $ A $ of a circle if area $A = \frac{ 7693 }{ 2500 }$ and diameter $d = \frac{ 49 }{ 50 }$. | 4 |
| 61 | Find the circumference $ C $ of a circle if diameter $d = 8$. | 4 |
| 62 | Find the diameter $ d $ of a circle if radius $r = 12.5\, \text{m}$. | 4 |
| 63 | Find the radius $ r $ of a circle if diameter $d = 26$. | 4 |
| 64 | Find the area $ A $ of a circle if area $A = 81\, \text{mm}^2$. | 4 |
| 65 | Find the area $ A $ of a circle if area $A = 102.02\, \text{mm}^2$, circumference $C = 35.8\, \text{mm}$, radius $r = 5.7\, \text{cm}$ and diameter $d = 11.4\, \text{cm}$. | 4 |
| 66 | Find the area $ A $ of a circle if radius $r = 9.6\, \text{cm}$. | 4 |
| 67 | Find the area $ A $ of a circle if area $A = 50\, \text{in}^2$. | 4 |
| 68 | Find the area $ A $ of a circle if diameter $d = 21\, \text{mm}$. | 4 |
| 69 | Find the area $ A $ of a circle if diameter $d = 300\pi\, \text{mm}$. | 4 |
| 70 | Find the area $ A $ of a circle if circumference $C = 7.5\, \text{cm}$. | 4 |
| 71 | Find the circumference $ C $ of a circle if area $A = 7.5\, \text{cm}^2$, circumference $C = 7.5\, \text{mm}$ and diameter $d = 7.5\, \text{mm}$. | 4 |
| 72 | Find the area $ A $ of a circle if area $A = 50\, \text{ft}^2$. | 4 |
| 73 | Find the area $ A $ of a circle if diameter $d = 4\, \text{ft}$. | 4 |
| 74 | Find the area $ A $ of a circle if radius $r = 14$. | 4 |
| 75 | Find the diameter $ d $ of a circle if area $A = 21\, \text{m}^2$. | 4 |
| 76 | Find the area $ A $ of a circle if area $A = \frac{ 5447 }{ 50 }$. | 3 |
| 77 | Find the area $ A $ of a circle if radius $r = 1.5\, \text{in}$. | 3 |
| 78 | Find the area $ A $ of a circle if circumference $C = 18.5\pi\, \text{cm}$. | 3 |
| 79 | Find the area $ A $ of a circle if radius $r = 7\, \text{cm}$. | 3 |
| 80 | Find the circumference $ C $ of a circle if radius $r = 8$. | 3 |
| 81 | Find the area $ A $ of a circle if circumference $C = 62.8\, \text{mm}$. | 3 |
| 82 | Find the area $ A $ of a circle if radius $r = 2\, \text{mm}$. | 3 |
| 83 | Find the area $ A $ of a circle if diameter $d = 6.4\, \text{cm}$. | 3 |
| 84 | Find the area $ A $ of a circle if radius $r = 120\, \text{m}$. | 3 |
| 85 | Find the area $ A $ of a circle if ???. | 3 |
| 86 | Find the area $ A $ of a circle if radius $r = \frac{ 25 }{ 2 }$. | 3 |
| 87 | Find the area $ A $ of a circle if area $A = 152\, \text{mm}^2$. | 3 |
| 88 | Find the area $ A $ of a circle if area $A = 10$, circumference $C = \frac{ 157 }{ 50 }$, radius $r = 5$ and diameter $d = 2$. | 3 |
| 89 | Find the area $ A $ of a circle if diameter $d = 7\, \text{in}$. | 3 |
| 90 | Find the area $ A $ of a circle if radius $r = 4.625\, \text{in}$ and diameter $d = 48\, \text{in}$. | 3 |
| 91 | Find the area $ A $ of a circle if radius $r = 4.625\, \text{in}$ and diameter $d = 48\, \text{in}$. | 3 |
| 92 | Find the area $ A $ of a circle if diameter $d = 2.8284\, \text{ft}$. | 3 |
| 93 | Find the area $ A $ of a circle if radius $r = 8\, \text{mm}$. | 3 |
| 94 | Find the circumference $ C $ of a circle if area $A = 201\, \text{cm}^2$ and radius $r = 3\, \text{cm}$. | 3 |
| 95 | Find the area $ A $ of a circle if radius $r = 3\, \text{mm}$ and diameter $d = 10\, \text{mm}$. | 3 |
| 96 | Find the area $ A $ of a circle if area $A = 49\pi\, \text{mm}^2$. | 3 |
| 97 | Find the area $ A $ of a circle if radius $r = 120\, \text{mm}$. | 3 |
| 98 | Find the area $ A $ of a circle if area $A = 17430625\, \text{mm}^2$. | 3 |
| 99 | Find the area $ A $ of a circle if area $A = 50\, \text{in}^2$, circumference $C = 25.06\, \text{mm}$, radius $r = 3.99\, \text{mm}$ and diameter $d = 7.98\, \text{in}$. | 3 |
| 100 | Find the radius $ r $ of a circle if area $A = 430$. | 3 |
