(a) 259.132 million sq. km
(b) 391.321 million sq. km
(c) 349.511 million sq. km
(d) 61.132 million sq. km

(a) 24,902 miles
(b) 34,902 miles
(c) 44,902 miles
(d) None of these

(a) 509,600,000 sq. km
(b) 492,102,000 sq. km
(c) 392,023,000 sq. km
(d) 692,192,000 sq. km