Question

A rectangular field is

Answer 1

350x300=105000m squared
1km=1000m
So, 105000=105km squared

Answer 2

Data:
long = 350m
wide = 300m

Solving:

$A_{r} = l*w$
$A_{r} = 350*300$
$A_{r} = 105000m^2$
Turning m² to km² (Three double decimal places on the left)
$\boxed{A_{r} = 0,105Km^2}$