A sphere, a cube and thin circular plate, all having the same mass and made of the same material are heated to the same temperature and then allowed to cool, which of them cools fastest?

A sphere, a cube and thin circular plate, all having the same mass and

1.	A sphere, a cube and thin circular plate, all having the same mass and made of the same material are heated to the same temperature and then allowed to cool, which of them cools fastest?
A.	Sphere
B.	Cube
C.	Circular plate
D.	All at the same rate
Answer» D. All at the same rate