that if you draw a circle of radius r, the circle's circumference will be C = 2nRsin(r/R) ize the Earth as a perfect sphere of radius R = 6371 km. If you could measure distances with an of ±1 meter, how large a circle would you have to draw on the Earth's surface to convince yoursel the Earth is spherical rather than flat ?

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Problem 1. Suppose you are a two-dimensional being, living on a sphere of radius R.
1. Show that if you draw a circle of radius r, the circle's circumference will be
C = 2nRsin(r/R)
2. Idealize the Earth as a perfect sphere of radius R = 6371 km. If you could measure distances with an
error of ±1 meter, how large a circle would you have to draw on the Earth's surface to convince yourself
that the Earth is spherical rather than flat ?
Transcribed Image Text:Problem 1. Suppose you are a two-dimensional being, living on a sphere of radius R. 1. Show that if you draw a circle of radius r, the circle's circumference will be C = 2nRsin(r/R) 2. Idealize the Earth as a perfect sphere of radius R = 6371 km. If you could measure distances with an error of ±1 meter, how large a circle would you have to draw on the Earth's surface to convince yourself that the Earth is spherical rather than flat ?
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