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
151	Find the area $ A $ of a circle if area $A = 78.5\, \text{mm}^2$.	3
152	Find the circumference $ C $ of a circle if area $A = 201\, \text{cm}^2$ and radius $r = 3\, \text{cm}$.	3
153	Find the radius $ r $ of a circle if area $A = 430$.	3
154	Find the area $ A $ of a circle if diameter $d = 6\, \text{mm}$.	3
155	Find the area $ A $ of a circle if radius $r = 2\, \text{mm}$.	3
156	Find the area $ A $ of a circle if circumference $C = 474\, \text{mm}$.	3
157	Find the area $ A $ of a circle if radius $r = 120\, \text{m}$.	3
158	Find the area $ A $ of a circle if area $A = 17430625\, \text{mm}^2$.	3
159	Find the area $ A $ of a circle if diameter $d = 0.375\, \text{in}$.	3
160	Find the area $ A $ of a circle if radius $r = 120\, \text{mm}$.	3
161	Find the area $ A $ of a circle if circumference $C = 0.5\, \text{in}$.	3
162	Find the area $ A $ of a circle if circumference $C = 24030\, \text{mm}$.	3
163	Find the area $ A $ of a circle if radius $r = 5.5\, \text{in}$.	3
164	Find the area $ A $ of a circle if circumference $C = 12\, \text{in}$.	3
165	Find the area $ A $ of a circle if diameter $d = 32\, \text{mm}$.	3
166	Find the area $ A $ of a circle if area $A = 700\, \text{mm}^2$.	3
167	Find the circumference $ C $ of a circle if area $A = 201.06\, \text{cm}^2$.	3
168	Find the area $ A $ of a circle if area $A = 1\, \text{in}^2$.	3
169	Find the area $ A $ of a circle if area $A = 0.307\, \text{mm}^2$.	3
170	Find the area $ A $ of a circle if diameter $d = 13\, \text{mm}$.	3
171	Find the area $ A $ of a circle if diameter $d = 6\, \text{mm}$.	3
172	Find the area $ A $ of a circle if radius $r = 99\, \text{in}$ and diameter $d = 199.5\, \text{in}$.	2
173	Find the area $ A $ of a circle if radius $r = \frac{ 1 }{ 6 }\, \text{mm}$.	2
174	Find the area $ A $ of a circle if diameter $d = 5.25\, \text{in}$.	2
175	Find the area $ A $ of a circle if circumference $C = 13.25\, \text{cm}$.	2
176	Find the area $ A $ of a circle if area $A = 150\, \text{ft}^2$.	2
177	Find the area $ A $ of a circle if radius $r = 120\, \text{in}$ and diameter $d = 240\, \text{in}$.	2
178	Find the area $ A $ of a circle if radius $r = 120\, \text{in}$.	2
179	Find the area $ A $ of a circle if area $A = 7\, \text{mm}^2$ and diameter $d = 7\, \text{in}$.	2
180	Find the area $ A $ of a circle if diameter $d = 17\, \text{in}$.	2
181	Find the area $ A $ of a circle if circumference $C = 104\, \text{mm}$.	2
182	Find the area $ A $ of a circle if diameter $d = 0.75\, \text{in}$.	2
183	Find the diameter $ d $ of a circle if radius $r = 330\, \text{cm}$ and diameter $d = 660\, \text{cm}$.	2
184	Find the diameter $ d $ of a circle if diameter $d = 660\, \text{cm}$.	2
185	Find the area $ A $ of a circle if circumference $C = 5\, \text{in}$.	2
186	Find the area $ A $ of a circle if diameter $d = 13\pi\, \text{mm}$.	2
187	Find the area $ A $ of a circle if radius $r = 31.05\, \text{mm}$.	2
188	Find the area $ A $ of a circle if diameter $d = 1800\, \text{mm}$.	2
189	Find the area $ A $ of a circle if area $A = 100\, \text{mm}^2$, radius $r = 3\, \text{mm}$ and diameter $d = 6\, \text{mm}$.	2
190	Find the area $ A $ of a circle if area $A = 210\, \text{in}^2$.	2
191	Find the area $ A $ of a circle if radius $r = 4\, \text{mm}$.	2
192	Find the area $ A $ of a circle if diameter $d = 88\, \text{cm}$.	2
193	Find the area $ A $ of a circle if diameter $d = 24\, \text{mm}$.	2
194	Find the area $ A $ of a circle if diameter $d = 24\, \text{m}$.	2
195	Find the area $ A $ of a circle if diameter $d = 24\, \text{m}$.	2
196	Find the area $ A $ of a circle if area $A = 2\pi\, \text{mm}^2$, circumference $C = \sqrt{ 9 }\, \text{mm}$, radius $r = 9\, \text{mm}$ and diameter $d = 4.3443\, \text{mm}$.	2
197	Find the circumference $ C $ of a circle if radius $r = 14\, \text{ft}$.	2
198	Find the circumference $ C $ of a circle if circumference $C = 19\, \text{in}$.	2
199	Find the circumference $ C $ of a circle if diameter $d = 26\, \text{cm}$.	2
200	Find the area $ A $ of a circle if circumference $C = 16\, \text{ft}$.	2