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13-09-2020
Mathematics

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Steve Fossett completed the first solo balloon circumnavigation of the world after 13.5 days. Assuming the balloon travelled along a circle of diameter 12 750 km, roughly what was the average speed of the balloon in km/h?

A) 12
B) 40
C) 75
D) 120
E) 300

Respuesta :

mhanifa mhanifa

13-09-2020

Answer:

B) 40

Step-by-step explanation:

Average speed = distance/time

Distance = 12750 km

Time = 13.5 days = 13.5*24 hours = 324 hours

Speed = 12750 km /324 h = 39.4 km/h ≈ 40 km/h

Correct option is B) 40

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