geophysicist interview questions shared by candidates
What is the area of a 16 sided regular polygon with sides of length L ?
area = L^2/tan(2*pi/32) ~= 5*L^2
area = 16*(L^2/tan(2*pi/32)/2) ~= 40*L^2
Area of a regular polygon A = 1/4 *n*l^2*cot(pi/n) Where n is the number of sides = 16, l is the length of a side = L Therefore A = 1/4*16*L^2 * cot(pi/16) = 20.10*L^2.
you have a balance scale and 10 coins, 9 of which are the same weight and the other is different. determine in the fewest amount of measurements which coin is different and if it weighs more or less than the other 9 coins?
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