The ship departs from Mogadishu in Somalia ([[$ 45 ° $]] E) along the equator towards Sumatra ([[$ 100 ° $]] E). The length of the equator is [[$ 40,000 $]] km.

a) How far does the ship travel?



Answer: The ship travels approximately km.

b) How much longer is the distance travelled by a seagull that flies 10 m above the ship at all times?



Answer: The seagull travels approximately meters more.