The measure of space occupied by a hemisphere, which is half of a sphere, a three-dimensional geometric shape with a curved surface that encloses a volume. The volume of a hemisphere is calculated using the formula V = (2/3)πr^3, where r is the radius of the hemisphere. Used in geometry, physics, and engineering for calculating volumes of objects with hemispherical shapes, such as half-spherical domes, bowls, and containers. View Solution Guide