https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:surface-areas-and-volumes/x06d55bfa213a79fd:hemisphere/v/surface-area-of-a-hemisphere 2025-10-27T12:01:04.888258735Z Surface area of a hemisphere In this video, we explore the surface area of a hemisphere—a three-dimensional shape that's half of a sphere. You'll learn the difference between curved surface area and total surface area, understand the formulas behind each, and see how they’re derived step by step. With clear visuals and real-world examples, we make the concept easy to grasp and apply. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now!Unit link 00:00 Surface area of sphere 00:47 CSA of hemisphere 01:27 TSA of hemisphere 02:42 Practice Question 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 Surface area of a hemisphere In this video, we explore the surface area of a hemisphere—a three-dimensional shape that's half of a sphere. You'll learn the difference between curved surface area and total surface area, understand the formulas behind each, and see how they’re derived step by step. With clear visuals and real-world examples, we make the concept easy to grasp and apply. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now!Unit link 00:00 Surface area of sphere 00:47 CSA of hemisphere 01:27 TSA of hemisphere 02:42 Practice Question 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/Uwnuy5HwYZs.mp4/Uwnuy5HwYZs.mp4 210 Surface area of a hemisphere https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:surface-areas-and-volumes/x06d55bfa213a79fd:hemisphere/e/finding-surface-area-of-a-hemisphere-basic 2025-10-06T11:00:50.235589704Z Finding surface area of a hemisphere : Basic In this exercise students use formulas to find out the hemisphere curved surface area and total surface area, from the given information. Khan Academy exercise https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:surface-areas-and-volumes/x06d55bfa213a79fd:hemisphere/e/word-problems-on-surface-area-of-hemisphere 2026-02-11T08:39:31.456454846Z Word problems on Surface area of hemisphere In this exercise the students solve the worded problems where they apply formulas to find surface area hemisphere Khan Academy exercise