Iceland vs Cuba: which is bigger?
Cuba is bigger: 109,884 km² against 103,004 km², about 1.07 times the size of Iceland.
Drop Iceland onto Cuba →Side by side at true size
Both drawn at the same scale on an equal-area projection.
And on the usual world map
On the usual world map it's the other way round: Iceland looks 4.5 times bigger than Cuba, because the map inflates Iceland about 5.6 times and Cuba only 1.16 times.
In numbers
Areas: official totals including inland water (UN Statistics Division via Wikidata). Outlines: Natural Earth. How Globegami works