Bunuel wrote:
A spaceship that is traveling 3,600 kilometers per hour can make a circular orbit around a spherical planet in 4 minutes. Approximately how far is the spaceship from the center of the planet?
A. 12,000 kilometers
B. 1200 kilometers
C. 240 kilometers
D. 120 kilometers
E. 40 kilometers
Speed= 3600 km/hr = 3600/60 = 60 km/min
In 4min, the spaceship covers a distance of 60 x 4 = 240 km
The circumference of the rotational path of the spaceship is 240 km
Distance of spaceship from the center of planet (Radius) = \(\frac{240}{{2π}}\)
π=3.14~3 (Since the question asks approximately)
Distance = \(\frac{240}{{2*3}}\)=\(\frac{240}{6}=40\)
Answer E.
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65% (01:23) correct 
