Question

The surface area of a ring: $\pi[(r+dr)^2 - r^2]$ or $2\pi r\,dr$?

score 11k · Answer 1 · 2026-04-17 08:26:45

11k

Views

The surface area of a ring: $\pi[(r+dr)^2 - r^2]$ or $2\pi r\,dr$?

Published on 17 Apr 2026 - 8:26

score 3.6k · Answer 2 · 2026-04-12 07:41:20

3.6k

Views

Diameter of a circle using 3 nonlinear points

Published on 12 Apr 2026 - 7:41

score 601 · Answer 3 · 2026-04-15 08:42:21

601

Views

Get the angle in a circle using center, radius and one point in a circle.

Published on 15 Apr 2026 - 8:42

score 1.2k · Answer 4 · 2026-04-12 14:25:35

1.2k

Views

Find the equation of a circle which is tangent to $y$-axis at a given point and cuts a chord of given length on the $x$-axis

Published on 12 Apr 2026 - 14:25

score 6.3k · Answer 5 · 2026-04-12 05:24:40

6.3k

Views

Prove that two circles are congruent if their radii are equal

Published on 12 Apr 2026 - 5:24

score 970 · Answer 6 · 2026-04-13 21:29:43

970

Views

Find if a point lies in all given circles

Published on 13 Apr 2026 - 21:29

score 1.5k · Answer 7 · 2026-04-14 17:08:53

1.5k

Views

Showing that a circle is "tangent" to the $x$-axis if and only if $\left|k\right| = r$.

Published on 14 Apr 2026 - 17:08

score 12.7k · Answer 8 · 2026-04-12 16:19:42

12.7k

Views

How can I find the smallest enclosing circle for a rectangle?

Published on 12 Apr 2026 - 16:19

score 5.3k · Answer 9 · 2026-04-11 14:19:38

5.3k

Views

How to find angular distance between points?

Published on 11 Apr 2026 - 14:19

score 155 · Answer 10 · 2026-04-16 14:29:09

155

Views

Area of an ellipse proportional to integral of cross-ellipse distances?

Published on 16 Apr 2026 - 14:29

score 79 · Answer 11 · 2026-04-11 21:55:58

79

Views

Locating a point on a circle

Published on 11 Apr 2026 - 21:55

score 925 · Answer 12 · 2026-04-15 13:12:35

925

Views

What proportion of the circle is covered by the square?

Published on 15 Apr 2026 - 13:12

score 67 · Answer 13 · 2026-04-14 17:15:13

67

Views

Circles and tangents

Published on 14 Apr 2026 - 17:15

score 66 · Answer 14 · 2026-04-14 05:26:47

66

Views

Calculating a specific point on a circle

Published on 14 Apr 2026 - 5:26

score 17.6k · Answer 15 · 2026-04-15 10:41:46

17.6k

Views

How to create circles and or sections of a circle when the centre is inaccessible

Published on 15 Apr 2026 - 10:41

List Question

The surface area of a ring: $\pi[(r+dr)^2 - r^2]$ or $2\pi r\,dr$?

Diameter of a circle using 3 nonlinear points

Get the angle in a circle using center, radius and one point in a circle.

Find the equation of a circle which is tangent to $y$-axis at a given point and cuts a chord of given length on the $x$-axis

Prove that two circles are congruent if their radii are equal

Find if a point lies in all given circles

Showing that a circle is "tangent" to the $x$-axis if and only if $\left|k\right| = r$.

How can I find the smallest enclosing circle for a rectangle?

How to find angular distance between points?

Area of an ellipse proportional to integral of cross-ellipse distances?

Locating a point on a circle

What proportion of the circle is covered by the square?

Circles and tangents

Calculating a specific point on a circle

How to create circles and or sections of a circle when the centre is inaccessible

Trending Questions

Popular # Hahtags

Popular Questions