Oxford Maths Admissions Interview Question with @blackpenredpen

Steve from blackpenredpen answers a real Oxford maths admissions interview question set by University of Oxford Mathematician Dr Tom Crawford. This exact question was used by Tom in the 2018 Oxford maths admissions interviews. The question looks at surfaces and volumes of revolution via a famous shape known as Gabriel’s Horn, which has a volume of pi but an infinite surface area. This is part 1 of the interview - watch the 2nd part on the divergence of the sum of the reciprocals of the prime numbers here: https://www.youtube.com/watch?v=oi4ET0KzViI Check out Steve’s brilliant channel blackpenredpen here: https://www.youtube.com/user/blackpenredpen Produced by Dr Tom Crawford at the University of Oxford. Tom is an Early-Career Teaching and Outreach Fellow at St Edmund Hall: https://www.seh.ox.ac.uk/people/tom-crawford For more maths content check out Tom's website https://tomrocksmaths.com/ You can also follow Tom on Facebook, Twitter and Instagram @tomrocksmaths. https://www.facebook.com/tomrocksmaths/ https://twitter.com/tomrocksmaths https://www.instagram.com/tomrocksmaths/ Get your Tom Rocks Maths merchandise here: https://beautifulequations.net/collections/tom-rocks-maths Tom Rocks Maths logo by Nathanial Butt: https://www.instagram.com/nat_von_b/?hl=en