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
601	Find the area $ A $ of a circle if radius $r = 40\, \text{mm}$.	2
602	Find the area $ A $ of a circle if diameter $d = 47\, \text{mm}$.	2
603	Find the area $ A $ of a circle if circumference $C = 146\, \text{mm}$.	2
604	Find the area $ A $ of a circle if area $A = 43\, \text{in}^2$ and circumference $C = 43\, \text{in}$.	2
605	Find the area $ A $ of a circle if diameter $d = 25\, \text{cm}$.	2
606	Find the area $ A $ of a circle if diameter $d = 17\, \text{mm}$.	2
607	Find the area $ A $ of a circle if diameter $d = 620\, \text{mm}$.	2
608	Find the diameter $ d $ of a circle if area $A = 201.1\, \text{m}^2$.	2
609	Find the area $ A $ of a circle if area $A = \frac{ 79 }{ 40 }\pi\, \text{mm}^2$, circumference $C = 2\pi\, \text{mm}$, radius $r = 1\, \text{mm}$ and diameter $d = 2\, \text{mm}$.	2
610	Find the area $ A $ of a circle if radius $r = 6\, \text{mm}$ and diameter $d = 12\, \text{mm}$.	2
611	Find the area $ A $ of a circle if area $A = 2.5\, \text{mm}^2$.	2
612	Find the circumference $ C $ of a circle if diameter $d = 7.5\, \text{cm}$.	2
613	Find the circumference $ C $ of a circle if diameter $d = 7.5\, \text{cm}$.	2
614	Find the circumference $ C $ of a circle if diameter $d = 7.5\, \text{cm}$.	2
615	Find the area $ A $ of a circle if radius $r = 145\, \text{cm}$.	2
616	Find the area $ A $ of a circle if circumference $C = \frac{ 15 }{ 16 }\, \text{in}$.	2
617	Find the area $ A $ of a circle if area $A = 4\, \text{ft}^2$ and diameter $d = 55\, \text{ft}$.	2
618	Find the area $ A $ of a circle if area $A = 12.56\, \text{mm}^2$, circumference $C = 12.56\, \text{ft}$, radius $r = 2\, \text{mm}$ and diameter $d = 4\, \text{ft}$.	2
619	Find the area $ A $ of a circle if diameter $d = 5\, \text{ft}$.	2
620	Find the area $ A $ of a circle if diameter $d = 32\, \text{in}$.	2
621	Find the area $ A $ of a circle if circumference $C = 0.35\, \text{mm}$.	2
622	Find the area $ A $ of a circle if diameter $d = 0.078\, \text{in}$.	2
623	Find the area $ A $ of a circle if area $A = 144\, \text{mm}^2$.	2
624	Find the area $ A $ of a circle if diameter $d = 300\, \text{mm}$.	2
625	Find the area $ A $ of a circle if diameter $d = 40\, \text{mm}$.	2
626	Find the area $ A $ of a circle if diameter $d = 15\, \text{ft}$.	2
627	Find the area $ A $ of a circle if circumference $C = 2000\, \text{mm}$.	2
628	Find the area $ A $ of a circle if radius $r = 109\, \text{mm}$.	2
629	Find the area $ A $ of a circle if area $A = 1\, \text{km}^2$.	2
630	Find the area $ A $ of a circle if diameter $d = 9.75\, \text{mm}$.	2
631	Find the area $ A $ of a circle if area $A = 100\, \text{in}^2$.	2
632	Find the area $ A $ of a circle if area $A = 82\, \text{in}^2$.	2
633	Find the area $ A $ of a circle if area $A = 91.875\, \text{in}^2$.	2
634	Find the area $ A $ of a circle if diameter $d = 82\, \text{mm}$.	2
635	Find the diameter $ d $ of a circle if diameter $d = 220\, \text{mm}$.	2
636	Find the area $ A $ of a circle if radius $r = 13\, \text{cm}$.	2
637	Find the area $ A $ of a circle if diameter $d = 6\, \text{in}$.	2
638	Find the area $ A $ of a circle if diameter $d = 3.5\, \text{in}$.	2
639	Find the area $ A $ of a circle if radius $r = 9\, \text{mm}$ and diameter $d = 18\, \text{in}$.	2
640	Find the area $ A $ of a circle if area $A = 4\, \text{ft}^2$.	2
641	Find the area $ A $ of a circle if diameter $d = 21\, \text{m}$.	2
642	Find the area $ A $ of a circle if diameter $d = 7\, \text{mm}$.	2
643	Find the area $ A $ of a circle if diameter $d = 13.75\, \text{in}$.	2
644	Find the area $ A $ of a circle if area $A = 11.5\, \text{in}^2$, circumference $C = 14\, \text{in}$, radius $r = 32.5\, \text{in}$ and diameter $d = 65\, \text{in}$.	2
645	Find the area $ A $ of a circle if area $A = 2\, \text{mm}^2$.	2
646	Find the area $ A $ of a circle if radius $r = 10\, \text{in}$.	2
647	Find the area $ A $ of a circle if radius $r = 10\, \text{in}$.	2
648	Find the area $ A $ of a circle if radius $r = 22\, \text{mm}$.	2
649	Find the area $ A $ of a circle if area $A = 400\, \text{ft}^2$.	2
650	Find the area $ A $ of a circle if area $A = 200\, \text{mm}^2$.	2