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 circumference $C = 18.5\, \text{mm}$.	2
152	Find the circumference $ C $ of a circle if radius $r = 5\, \text{cm}$.	2
153	Find the area $ A $ of a circle if area $A = 452.2\, \text{in}^2$.	2
154	Find the circumference $ C $ of a circle if diameter $d = 7.5\, \text{cm}$.	2
155	Find the area $ A $ of a circle if circumference $C = 6.5\, \text{in}$.	2
156	Find the area $ A $ of a circle if diameter $d = 1000\, \text{mm}$.	2
157	Find the area $ A $ of a circle if circumference $C = 21\, \text{cm}$.	2
158	Find the area $ A $ of a circle if area $A = 1450\, \text{mm}^2$.	2
159	Find the area $ A $ of a circle if area $A = 16\, \text{mm}^2$.	2
160	Find the area $ A $ of a circle if radius $r = 16\, \text{km}$ and diameter $d = 32\, \text{km}$.	2
161	Find the area $ A $ of a circle if diameter $d = 32\, \text{mm}$.	2
162	Find the area $ A $ of a circle if diameter $d = 32\, \text{km}$.	2
163	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
164	Find the diameter $ d $ of a circle if radius $r = 37.6\, \text{cm}$.	2
165	Find the area $ A $ of a circle if radius $r = 299.2113\, \text{mm}$.	2
166	Find the area $ A $ of a circle if radius $r = 120\, \text{m}$.	2
167	Find the area $ A $ of a circle if radius $r = 120\, \text{m}$.	2
168	Find the diameter $ d $ of a circle if radius $r = 120\, \text{m}$.	2
169	Find the diameter $ d $ of a circle if radius $r = 120\, \text{m}$.	2
170	Find the area $ A $ of a circle if radius $r = 120\, \text{m}$.	2
171	Find the area $ A $ of a circle if diameter $d = 88\, \text{mm}$.	2
172	Find the area $ A $ of a circle if diameter $d = 16\, \text{cm}$.	2
173	Find the area $ A $ of a circle if area $A = 20\, \text{mm}^2$.	2
174	Find the area $ A $ of a circle if radius $r = 5\, \text{ft}$ and diameter $d = 10\, \text{ft}$.	2
175	Find the area $ A $ of a circle if ???.	2
176	Find the diameter $ d $ of a circle if area $A = 34\, \text{m}^2$ and circumference $C = 2\, \text{m}$.	2
177	Find the area $ A $ of a circle if diameter $d = 25\, \text{in}$.	2
178	Find the area $ A $ of a circle if diameter $d = 26\, \text{mm}$.	2
179	Find the area $ A $ of a circle if radius $r = 13.1\, \text{in}$.	2
180	Find the area $ A $ of a circle if diameter $d = 600\, \text{mm}$.	2
181	Find the area $ A $ of a circle if diameter $d = 80\, \text{mm}$.	2
182	Find the area $ A $ of a circle if radius $r = 40\, \text{mm}$ and diameter $d = 80\, \text{mm}$.	2
183	Find the diameter $ d $ of a circle if diameter $d = 25\, \text{m}$.	2
184	Find the area $ A $ of a circle if radius $r = 129\, \text{in}$.	2
185	Find the area $ A $ of a circle if radius $r = 1.25\, \text{cm}$.	2
186	Find the area $ A $ of a circle if radius $r = 50\, \text{m}$.	2
187	Find the area $ A $ of a circle if circumference $C = 6.4\, \text{mm}$.	2
188	Find the area $ A $ of a circle if circumference $C = 6.4\, \text{in}$.	2
189	Find the area $ A $ of a circle if diameter $d = 803.2\, \text{in}$.	2
190	Find the area $ A $ of a circle if radius $r = 7\, \text{in}$.	2
191	Find the area $ A $ of a circle if diameter $d = 0.8\, \text{m}$.	2
192	Find the area $ A $ of a circle if diameter $d = 258.722\, \text{mm}$.	2
193	Find the area $ A $ of a circle if area $A = 100\, \text{mm}^2$, circumference $C = 27\, \text{ft}$, radius $r = 134\, \text{mm}$ and diameter $d = 58\, \text{mi}$.	2
194	Find the area $ A $ of a circle if radius $r = 1.5\, \text{ft}$.	2
195	Find the area $ A $ of a circle if radius $r = 1.5\, \text{mi}$.	2
196	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
197	Find the area $ A $ of a circle if diameter $d = 12\, \text{mm}$.	2
198	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
199	Find the area $ A $ of a circle if radius $r = 13.75\, \text{mm}$.	2
200	Find the area $ A $ of a circle if area $A = 53\, \text{mm}^2$ and radius $r = 5\, \text{mm}$.	2