A sphere exposes less surface area for the same amount of volume than a cube of ice. ... The less surface area that is exposed to the warm liquid, the slower the ice will melt. Therefore, a sphere of ice will melt more slowly in a drink than a cube of ice.

What shape ice cube melts the slowest?

Why? The shape of the rectangular ice cube is the flattest and has the most surface area. This means that heat will be absorbed over a larger area and thus the ice cube will melt faster. A crescent-shaped cube will melt the slowest.

What melts faster round or square ice cubes?

A spherical ice cube with the same volume has a surface area of approximately 43.5 square centimeters. Therefore, the cubical ice cube melts faster than either of the other two shapes since it has the greatest surface area.