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
351	Find the area $ A $ of a circle if circumference $C = 42\pi\, \text{mm}$.	2
352	Find the area $ A $ of a circle if circumference $C = 68\, \text{mm}$.	2
353	Find the area $ A $ of a circle if radius $r = 15\, \text{mm}$.	2
354	Find the area $ A $ of a circle if radius $r = 10.5\, \text{mm}$ and diameter $d = 21\, \text{mm}$.	2
355	Find the area $ A $ of a circle if diameter $d = 21\, \text{mm}$.	2
356	Find the area $ A $ of a circle if area $A = 1.9\, \text{mm}^2$ and radius $r = 0.95\, \text{mm}$.	2
357	Find the area $ A $ of a circle if radius $r = 0.95\, \text{mm}$.	2
358	Find the area $ A $ of a circle if area $A = 1.9\, \text{mm}^2$.	2
359	Find the diameter $ d $ of a circle if area $A = 20\, \text{m}^2$.	2
360	Find the area $ A $ of a circle if area $A = 8.0848\, \text{in}^2$ and diameter $d = 5\, \text{in}$.	2
361	Find the area $ A $ of a circle if area $A = 153\pi\, \text{mm}^2$.	2
362	Find the area $ A $ of a circle if diameter $d = 12\, \text{mm}$.	2
363	Find the area $ A $ of a circle if diameter $d = 12\, \text{mm}$.	2
364	Find the area $ A $ of a circle if radius $r = 20\, \text{mm}$.	2
365	Find the area $ A $ of a circle if radius $r = 20\, \text{mm}$.	2
366	Find the area $ A $ of a circle if diameter $d = 7.5\, \text{ft}$.	2
367	Find the area $ A $ of a circle if diameter $d = 29.75\, \text{mm}$.	2
368	Find the area $ A $ of a circle if area $A = 300\, \text{mm}^2$.	2
369	Find the area $ A $ of a circle if radius $r = 152\, \text{mm}$.	2
370	Find the area $ A $ of a circle if radius $r = 500\, \text{cm}$.	2
371	Find the area $ A $ of a circle if diameter $d = 3.356\, \text{in}$.	2
372	Find the area $ A $ of a circle if diameter $d = 50\, \text{cm}$.	2
373	Find the area $ A $ of a circle if radius $r = 4\, \text{mm}$.	2
374	Find the area $ A $ of a circle if diameter $d = \frac{ 81 }{ 2 }\, \text{mm}$.	2
375	Find the area $ A $ of a circle if circumference $C = 158\, \text{m}$.	2
376	Find the area $ A $ of a circle if radius $r = \sqrt{ 13 }\, \text{mm}$.	2
377	Find the area $ A $ of a circle if area $A = 36\, \text{mm}^2$ and radius $r = 6\, \text{mm}$.	2
378	Find the area $ A $ of a circle if radius $r = 6\, \text{mm}$.	2
379	Find the area $ A $ of a circle if area $A = 900\, \text{mm}^2$ and circumference $C = 1290\, \text{mm}$.	2
380	Find the area $ A $ of a circle if circumference $C = 4\, \text{mm}$, radius $r = 2\, \text{mm}$ and diameter $d = 3\, \text{mm}$.	2
381	Find the radius $ r $ of a circle if circumference $C = 24$.	2
382	Find the circumference $ C $ of a circle if radius $r = 63$.	2
383	Find the area $ A $ of a circle if area $A = 50\, \text{in}^2$.	2
384	Find the area $ A $ of a circle if area $A = 15\, \text{mm}^2$.	2
385	Find the area $ A $ of a circle if radius $r = 7\, \text{mm}$.	2
386	Find the area $ A $ of a circle if area $A = 9333\, \text{mm}^2$.	2
387	Find the area $ A $ of a circle if area $A = 20\, \text{mm}^2$.	2
388	Find the area $ A $ of a circle if diameter $d = 16\, \text{cm}$.	2
389	Find the area $ A $ of a circle if diameter $d = 88\, \text{mm}$.	2
390	Find the area $ A $ of a circle if radius $r = 120\, \text{m}$.	2
391	Find the diameter $ d $ of a circle if radius $r = 120\, \text{m}$.	2
392	Find the diameter $ d $ of a circle if radius $r = 120\, \text{m}$.	2
393	Find the area $ A $ of a circle if radius $r = 120\, \text{m}$.	2
394	Find the area $ A $ of a circle if radius $r = 120\, \text{m}$.	2
395	Find the area $ A $ of a circle if radius $r = 299.2113\, \text{mm}$.	2
396	Find the diameter $ d $ of a circle if radius $r = 37.6\, \text{cm}$.	2
397	Find the area $ A $ of a circle if circumference $C = 94.2\, \text{ft}$, radius $r = 15\, \text{ft}$ and diameter $d = 30\, \text{ft}$.	2
398	Find the area $ A $ of a circle if diameter $d = 32\, \text{km}$.	2
399	Find the area $ A $ of a circle if radius $r = 16\, \text{km}$ and diameter $d = 32\, \text{km}$.	2
400	Find the area $ A $ of a circle if ???.	2