Rhode Island is about 1.8 times smaller than Grand Canyon National Park.

Grand Canyon National Park is approximately 4,863 km² (1,878 sq mi), while Rhode Island is approximately 2,706 sq km, making Rhode Island 55.65% the size of Grand Canyon National Park.
Tip: This to-scale comparison of Grand Canyon National Park vs. Rhode Island uses the Mercator projection, which distorts the size of regions near the poles.
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