a tiny square microprocessor in a mobile device has an area of 49/54 in 2.What is the side lenght of the microprocessor, and how many microprocessors could cover a square circuit board that has a side length of 3.5 inches?
The side length of the microprocessor = sqrt [49 / 54] = [ 7] / [3 sqrt(6)] in
The area of the circuit board = (3 .5)^2 in = 12.25 in^2
So
12.25 / [ 49 / 54] = about 13 microprocessors could fit
