Answer
Cuba has a greater mass by $7,852km^{2}$
Work Step by Step
Step 1. 1 square mile = 2.59 square kilometers
Iceland= 10300km^{2}
Step 2: $\frac{42800mi}{1}\times\frac{2 .59km}{1mi}=110,852km^{2}$
Step 3: $110,852-103000=7,852 km^{2}$