Question

Area of annulus $dA = 2\pi r \ dr$, is it a coincidence that $\frac{dA}{dr} = 2\pi r \implies A = \pi r^2$?

score 1.2k · Answer 1 · 2026-03-24 22:07:43

1.2k

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Area of annulus $dA = 2\pi r \ dr$, is it a coincidence that $\frac{dA}{dr} = 2\pi r \implies A = \pi r^2$?

Published on 24 Mar 2026 - 22:07

score 45 · Answer 2 · 2026-03-22 00:58:24

45

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Double integral with multiple conditions

Published on 22 Mar 2026 - 0:58

score 663 · Answer 3 · 2026-03-24 23:54:35

663

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Parallelogram and similar triangles question

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score 76 · Answer 4 · 2026-03-21 20:45:03

76

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Area related to circles

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score 1.1k · Answer 5 · 2026-03-21 23:42:23

1.1k

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The generous lazy caterer

Published on 21 Mar 2026 - 23:42

score 39 · Answer 6 · 2018-01-27 19:27:46

If $f: \mathbb{R}^2 \rightarrow \mathbb{R}^2$ be defined as $f(x,y) = e^{x+y}, e^{x-y}$, what is the area of the image of $\{0<x,y<1\}$?

score 63 · Answer 7 · 2026-03-21 19:10:28

63

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Fraction of Perimeter

Published on 21 Mar 2026 - 19:10

score 410 · Answer 8 · 2026-03-25 01:41:16

410

Views

Find the maximum area of a triangle given angle and opposite side

Published on 25 Mar 2026 - 1:41

score 1.4k · Answer 9 · 2018-01-30 18:21:00

1.4k

Views

Area of a region bounded by $y=8$ and $y= |x^2-1|$

Published on 30 Jan 2018 - 18:21

score 673 · Answer 10 · 2026-03-24 20:32:13

673

Views

Find the area of curve

Published on 24 Mar 2026 - 20:32

score 207 · Answer 11 · 2026-03-21 22:04:00

207

Views

Area of Weird Shapes

Published on 21 Mar 2026 - 22:04

score 2.1k · Answer 12 · 2026-03-25 09:24:23

2.1k

Views

A line from a vertex of a triangle divides opposite side in a ratio,determine the ratio of areas?

Published on 25 Mar 2026 - 9:24

score 691 · Answer 13 · 2026-03-25 17:30:44

691

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Integrating the area of a circle with rectangles

Published on 25 Mar 2026 - 17:30

score 21.6k · Answer 14 · 2026-03-24 13:02:23

21.6k

Views

Is there a formula to calculate the area of a trapezoid knowing the length of all its sides?

Published on 24 Mar 2026 - 13:02

score 251 · Answer 15 · 2026-03-25 06:09:52

251

Views

Dividing a hemisphere into two equal surface areas

Published on 25 Mar 2026 - 6:09

List Question

Area of annulus $dA = 2\pi r \ dr$, is it a coincidence that $\frac{dA}{dr} = 2\pi r \implies A = \pi r^2$?

Double integral with multiple conditions

Parallelogram and similar triangles question

Area related to circles

The generous lazy caterer

If $f: \mathbb{R}^2 \rightarrow \mathbb{R}^2$ be defined as $f(x,y) = e^{x+y}, e^{x-y}$, what is the area of the image of $\{0<x,y<1\}$?

Fraction of Perimeter

Find the maximum area of a triangle given angle and opposite side

Area of a region bounded by $y=8$ and $y= |x^2-1|$

Find the area of curve

Area of Weird Shapes

A line from a vertex of a triangle divides opposite side in a ratio,determine the ratio of areas?

Integrating the area of a circle with rectangles

Is there a formula to calculate the area of a trapezoid knowing the length of all its sides?

Dividing a hemisphere into two equal surface areas

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