Question

A square plot of land has an area of 36 hectares, fenced round with posts placed 3m apart, if a gate of 15m wide was left how many posts are used.

Answer 1

Area = 36 hectares = 360000 m2

\(\therefore \) a = side length of square = 600 m

Posts length after removing 15m wide gate = (600 - 15)m = 58.5 m

\(\because\) Posts length = 3 m

\(\therefore \) Total posts used = \(\frac{585}3 = 195\)