Africa dwarfs Brazil: about 30,370,000 km² km² against 8,499,400 km² km². At true size Africa is about 3.6× larger — the whole of Brazil fits into Africa roughly 3 times.
The old Mercator map treated both about equally (1× vs 1× inflation), so at least their relative sizes were preserved — even if both were drawn at the wrong absolute scale.
Brazil fits 3× into Africa.