Just curious about filling a container and a hole shaped exactly like the container

Question

anonymous · Answer

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Say you wanna fill them with water and they both same shape and size, exactly congruent but one is a hole on the ground and the other a container.

Will work done to fill them be the same?

anonymous · Answer

basically on is an upside down version of the other.

anonymous · Answer

divide it into 2 triangles and a square(or rectangle) in middle.

zepp · Answer

Yes the volume would be exactly the same

anonymous · Answer

Divide it into two triangles, with a square in the center of it and the volume and work done to fill them shall be the same