Question

The area of a square field is 8 hectares how long wooden men take to cross a diagonally by walking at the rate of 4 km per hour

Answer 1

1 hectare = 10,000 m²
area = 80,000 m²
side length = √80,000 = 200√2 m
length of diagonal = √(200√2²+200√2²)=400 m=0.4km
time = distance/speed
= 0.4/4 = 0.1 hour