Question

Four cows are tethered at four corners of a square plot of side 50 m, so that they just cannot reach one another. What area will be left ungrazed?

Answer 1

The length grazed=$\frac{50}{4}$=12.5m
so area grazed=12.5$\times$12.5=156.25$m^2$
Total area of square=50$\times$50=2500$m^2$
now,area which remain ungrazed=(2500-156.25)
=2343.75$m^2$