Explanation:
why don't you look these basic definitions up on the internet ?
how many ft in 1 m ?
3.280839895... ft in 1 m.
so, 1 m² = 1 m × 1 m = 10.76391042... ft²
and 10 m² are then 10×1 m² = 107.6391042... ft²
therefore,
a) false
b) true
1 fl oz = 29.57353 ml
12.8 fl oz = 12.8 × 1 fl oz = 378.541184 ml
c) false
1 km = 0.6213711922 miles
6.7 km = 6.7 × 1 km = 4.163186988... miles