Question

A rectangular field 250 m long by 110 m wide. How much shorter is it to walk diagonally across the field than around the sides?

Answer 1

It's 1/4 the time shorter.

Answer 2

Use Pythagoras
h^2 = 250^2 + 110^2
= 74600
h = √74600
= 273.13 m

so what is 250+110 - 273.13 ?