How can I make this shape?

Hi there! Sorry for the lack of better words / illustration but I would like to make a shape like the one I drew below. What’s the best way to do so?

For more context, I basically am working on a architectural project at school and have made a building like the one below. At the moment, each slab is a simply extruded circle but I would like to change its shapes to a circle that’s kind of inflated like illustrated above.

Thanks for your help!

Revolve or RailRevolve commands.

The Loose option in the Loft command can be used to geed effect for this shape too.

@davidcockey @John_Brock Thank you so much for your super quick help! Revolve was a perfect fit :relaxed: Thanks for helping out such a newbie :sweat_smile: