Given : A square grossary plot of length 80m
Two paths of width 4m each.
From the question
KL = 4m and KN = 80m
EH = 4m and EF 80m
PQ = 4m and PS 4m
Area of two paths = KLMN + EFGH – FQRS
= KN x KL + EF × EH – PQ × PS
= 80 × 4 + 80 × 4 – 4 × 4
= 320 + 320 – 16
= 624sq.m.