Circle

(the database of solved problems)

All the problems and solutions shown below were generated using the Circle Calculator.

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ID	Problem	Count
251	Find the circumference $ C $ of a circle if radius $r = 63$ and diameter $d = 135$.	2
252	Find the area $ A $ of a circle if diameter $d = 40\, \text{ft}$.	2
253	Find the area $ A $ of a circle if diameter $d = 24\, \text{mm}$.	2
254	Find the area $ A $ of a circle if diameter $d = 1200$.	2
255	Find the area $ A $ of a circle if area $A = 64$, circumference $C = 16$, radius $r = 8$ and diameter $d = 16$.	2
256	Find the area $ A $ of a circle if diameter $d = 16\, \text{ft}$.	2
257	Find the circumference $ C $ of a circle if area $A = 155$ and radius $r = 80$.	2
258	Find the diameter $ d $ of a circle if ???.	2
259	Find the area $ A $ of a circle if radius $r = 40\, \text{ft}$.	2
260	Find the area $ A $ of a circle if radius $r = 3$ and diameter $d = 6$.	2
261	Find the area $ A $ of a circle if radius $r = 0.04\, \text{mm}$.	2
262	Find the radius $ r $ of a circle if circumference $C = 1800$.	2
263	Find the diameter $ d $ of a circle if diameter $d = 270$.	2
264	Find the area $ A $ of a circle if circumference $C = \frac{ 94 }{ 5 }$.	2
265	Find the area $ A $ of a circle if diameter $d = 270$.	2
266	Find the area $ A $ of a circle if area $A = 36$.	2
267	Find the circumference $ C $ of a circle if radius $r = 63$.	2
268	Find the area $ A $ of a circle if radius $r = 6 \sqrt{ 2 }$.	2
269	Find the area $ A $ of a circle if diameter $d = 74$.	2
270	Find the diameter $ d $ of a circle if circumference $C = \frac{ 49 }{ 5 }$.	2
271	Find the diameter $ d $ of a circle if circumference $C = \frac{ 48 }{ 5 }$.	2
272	Find the area $ A $ of a circle if diameter $d = 14\, \text{ft}$.	2
273	Find the circumference $ C $ of a circle if radius $r = 4$.	2
274	Find the area $ A $ of a circle if radius $r = 6$.	2
275	Find the area $ A $ of a circle if area $A = 2\, \text{yd}^2$, circumference $C = 7\, \text{mm}$ and radius $r = 4\, \text{mm}$.	2
276	Find the area $ A $ of a circle if area $A = 11\, \text{mm}^2$, radius $r = 12\, \text{dm}$ and diameter $d = 14\, \text{mm}$.	2
277	Find the area $ A $ of a circle if diameter $d = 12\, \text{mm}$.	2
278	Find the radius $ r $ of a circle if area $A = 4300$.	2
279	Find the area $ A $ of a circle if area $A = 10$, circumference $C = 5$, radius $r = \frac{ 157 }{ 50 }$ and diameter $d = 2$.	2
280	Find the area $ A $ of a circle if area $A = 53\, \text{mm}^2$ and radius $r = 5\, \text{mm}$.	2
281	Find the area $ A $ of a circle if radius $r = 12\, \text{yd}$.	2
282	Find the diameter $ d $ of a circle if area $A = \frac{ 7693 }{ 2500 }$.	2
283	Find the area $ A $ of a circle if diameter $d = 23\, \text{in}$.	2
284	Find the area $ A $ of a circle if area $A = 70\, \text{in}^2$.	2
285	Find the circumference $ C $ of a circle if radius $r = \frac{ 129 }{ 5 }$.	2
286	Find the circumference $ C $ of a circle if circumference $C = 430$.	2
287	Find the diameter $ d $ of a circle if radius $r = \frac{ 129 }{ 5 }$ and diameter $d = \frac{ 258 }{ 5 }$.	2
288	Find the diameter $ d $ of a circle if diameter $d = \frac{ 258 }{ 5 }$.	2
289	Find the circumference $ C $ of a circle if diameter $d = \frac{ 258 }{ 5 }$.	2
290	Find the area $ A $ of a circle if area $A = \frac{ 27 }{ 50 }\, \text{mm}^2$.	2
291	Find the radius $ r $ of a circle if circumference $C = \frac{ 49 }{ 5 }$.	2
292	Find the area $ A $ of a circle if radius $r = 128$ and diameter $d = 256$.	2
293	Find the area $ A $ of a circle if diameter $d = 6 \sqrt{ 2 }$.	2
294	Find the area $ A $ of a circle if radius $r = 7\, \text{yd}$.	2
295	Find the area $ A $ of a circle if area $A = 8\, \text{mm}^2$.	2
296	Find the area $ A $ of a circle if diameter $d = 6$.	2
297	Find the circumference $ C $ of a circle if radius $r = 20$.	2
298	Find the circumference $ C $ of a circle if circumference $C = 16$ and radius $r = 8$.	2
299	Find the circumference $ C $ of a circle if area $A = 430$, circumference $C = 6\pi$, radius $r = \frac{ 11 }{ 2 }$ and diameter $d = 60$.	2
300	Find the area $ A $ of a circle if radius $r = 13.75\, \text{mm}$.	2