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Hemisphere - GCSE Maths Definition

Reviewed by: Mark Curtis

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In mathematics, a 'hemisphere' refers to half of a sphere. Imagine cutting a round ball into two equal parts right through its middle; each part is a hemisphere. When dealing with geometry, you often calculate the surface area or volume of hemispheres. For surface area, don't forget that a hemisphere has both a curved surface and a flat circular base. Understanding hemispheres can help with problems involving 3D shapes, and is part of the study of geometry in the GCSE Maths course.

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Mark Curtis

Reviewer: Mark Curtis

Expertise: Maths Content Creator

Mark graduated twice from the University of Oxford: once in 2009 with a First in Mathematics, then again in 2013 with a PhD (DPhil) in Mathematics. He has had nine successful years as a secondary school teacher, specialising in A-Level Further Maths and running extension classes for Oxbridge Maths applicants. Alongside his teaching, he has written five internal textbooks, introduced new spiralling school curriculums and trained other Maths teachers through outreach programmes.

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