If anybody wants to compare answers, this is what I got.
1d 2a 3b 4a 5b 6c 7b 8c 9b 10a 11d 12c 13a 14c 15b 16d 17c 18a 19d 20a 21c 22d 23d 24b 25c
26a 117
26b 3
26c 4468km
26d $369.17
26e(i) 0.17 (ii) 0.86
26f 365450163.7km sq
26g $96.36
27a 58.18m
27b 50
27c (i) $250 (ii) 65
27d...