https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-plane-figures/cc-6th-area-triangle/v/intuition-for-area-of-a-triangle 2023-06-30T00:54:25.287354524Z Area of a triangle The area of a rectangle and a parallelogram is found by multiplying the base by the height. For a triangle, the area is half of a parallelogram's, so it's calculated by multiplying the base by the height and then dividing by 2. video https://cdn.kastatic.org/googleusercontent/Fi9pR66SMMyijKzoyFIw6a2cHjUub-HncPLAlfT0a90llRBEciMFgGmv-CAlSSHoRNi9iIgUuqiBYzHBnwv9yt4 Area of a triangle The area of a rectangle and a parallelogram is found by multiplying the base by the height. For a triangle, the area is half of a parallelogram's, so it's calculated by multiplying the base by the height and then dividing by 2. https://cdn.kastatic.org/ka-youtube-converted/rRTXKQpblEc.mp4/rRTXKQpblEc.mp4 330 Area of plane figures https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-plane-figures/cc-6th-area/v/area-of-quadrilateral-with-2-parallel-sides 2023-06-30T00:54:25.287354524Z Area of quadrilateral with 2 parallel sides Learn how to find the area of a quadrilateral by splitting it into two triangles. Use the formula for triangle area (1/2 base times height) for each triangle. Add the areas together for the total quadrilateral area. It's as easy as pie...or should I say, as easy as area! Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/687379e4-2154-4ea9-9fe9-724a4de9f954_1280_720_base.png Area of quadrilateral with 2 parallel sides Learn how to find the area of a quadrilateral by splitting it into two triangles. Use the formula for triangle area (1/2 base times height) for each triangle. Add the areas together for the total quadrilateral area. It's as easy as pie...or should I say, as easy as area! https://cdn.kastatic.org/ka-youtube-converted/uEIoh8uWs1U.mp4/uEIoh8uWs1U.mp4 222 Area of plane figures https://www.khanacademy.org/math/kn-math-class-9-bridge/x14595f36277e97c8:mensuration/x14595f36277e97c8:2d-shapes/v/area-of-trapezoids-indian-accent 2025-06-08T17:06:50.364590398Z Area of trapezoids Area of a trapezoid is found with the formula, A=(a+b)h/2. To find the area of a trapezoid, you need to know the lengths of the two parallel sides (the "bases") and the height. Add the lengths of the two bases together, and then multiply by the height. Finally, divide by 2 to get the area of the trapezoid. Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Area of trapezoids Area of a trapezoid is found with the formula, A=(a+b)h/2. To find the area of a trapezoid, you need to know the lengths of the two parallel sides (the "bases") and the height. Add the lengths of the two bases together, and then multiply by the height. Finally, divide by 2 to get the area of the trapezoid. https://cdn.kastatic.org/ka-youtube-converted/TMszjQ1YCVM.mp4/TMszjQ1YCVM.mp4 288 Area of plane figures https://www.khanacademy.org/math/revision-tg-math-class-8/x9ce0e841a99d4a8a:week-2/x9ce0e841a99d4a8a:area-of-plane-figures/v/area-of-a-quadrilateral 2025-10-27T11:00:46.958143659Z Area of a Quadrilateral Learn how to find the area of a quadrilateral with simple step-by-step methods. We’ll explore different approaches, work through two area calculations, and then bring it all together with a combined general formula. Finally, we apply the concept to the area of a parallelogram. With clear visuals and easy explanations, this video makes understanding quadrilateral areas straightforward and practical. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/class-8-tg/xc1c312da8d7d0ce2:area-of-plane-figures Timestamps: 00:00 - Approach 01:02 - Area calculation I 02:16 - Area calculation II 03:38 - Combined formula 06:10 - Area of a parallelogram Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Area of a Quadrilateral Learn how to find the area of a quadrilateral with simple step-by-step methods. We’ll explore different approaches, work through two area calculations, and then bring it all together with a combined general formula. Finally, we apply the concept to the area of a parallelogram. With clear visuals and easy explanations, this video makes understanding quadrilateral areas straightforward and practical. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/class-8-tg/xc1c312da8d7d0ce2:area-of-plane-figures Timestamps: 00:00 - Approach 01:02 - Area calculation I 02:16 - Area calculation II 03:38 - Combined formula 06:10 - Area of a parallelogram Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/o59kNx0WeBI.mp4/o59kNx0WeBI.mp4 496 Area of plane figures https://www.khanacademy.org/math/kn-math-class-9-bridge/x14595f36277e97c8:mensuration/x14595f36277e97c8:2d-shapes/v/area-of-composite-shapes-indian-accent 2025-06-08T17:06:50.364590398Z Area of composite shapes We can sometimes calculate the area of a complex shape by dividing it into smaller, more manageable parts. In this example, we can determine the area of two triangles, a rectangle, and a trapezoid, and then add up the areas of the four shapes to get the total area. Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Area of composite shapes We can sometimes calculate the area of a complex shape by dividing it into smaller, more manageable parts. In this example, we can determine the area of two triangles, a rectangle, and a trapezoid, and then add up the areas of the four shapes to get the total area. https://cdn.kastatic.org/ka-youtube-converted/CkwfmM8LmVs.mp4/CkwfmM8LmVs.mp4 315 Area of plane figures https://www.khanacademy.org/math/class-10-geometry-od/x6c43792871149241:mensuration/x6c43792871149241:areas-of-sector-and-segment-of-a-circle/v/area-of-circular-annulus 2024-12-20T13:30:56.781888551Z Area of Circular Annulus In this video we disucss how we can find the area of a circular annulus or a ring with some width. And what are common mistakes that we do while doing it. Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Area of Circular Annulus In this video we disucss how we can find the area of a circular annulus or a ring with some width. And what are common mistakes that we do while doing it. https://cdn.kastatic.org/ka-youtube-converted/XDGnJt-rEfA.mp4/XDGnJt-rEfA.mp4 251 Area of plane figures https://www.khanacademy.org/math/board-preparation-maharashtra-math-10/x20d33f0422cd733e:week-3-board-prep-maharashtra/x20d33f0422cd733e:mensuration/v/area-of-a-sector-indian-accent 2025-06-04T10:09:34.285343432Z Area of a sector A worked example of finding the area of a circle's sector using the area of the circle and the central angle of the sector. Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Area of a sector A worked example of finding the area of a circle's sector using the area of the circle and the central angle of the sector. https://cdn.kastatic.org/ka-youtube-converted/IhE5c4GAZus.mp4/IhE5c4GAZus.mp4 145 Area of plane figures https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-geometry/cc-7th-area-circ-challenge/v/area-of-shaded-region 2020-09-16T18:09:55Z Area of a shaded region Here's a fun one: find the area of a shaded region where you first determine the area of a square and then the area of a circle. Sal Khan video https://cdn.kastatic.org/googleusercontent/ewA_GfGHFeHuh06YBoJCmdRj28PUnKIDRUCQjYZ22RvnNyhy2VgbJtg0HZn9btBBWDSibObwz9nJlscnpVnv8lmfiw Area of a shaded region Here's a fun one: find the area of a shaded region where you first determine the area of a square and then the area of a circle. https://cdn.kastatic.org/ka-youtube-converted/gbGghzo7yEM.mp4/gbGghzo7yEM.mp4 91 Area of plane figures https://www.khanacademy.org/math/revision-tg-math-class-8/x9ce0e841a99d4a8a:week-2/x9ce0e841a99d4a8a:area-of-plane-figures/e/revision-area-of-plane-figures-tg-class-8 2026-02-18T21:20:35.275198076Z Revision area of plane figures TG class 8 . Khan Academy exercise