litre - gallon, hectare - ?

ACRE
List of words for the clue litre - gallon, hectare - ? from the crossword:
UNIT YARD POUND MILE METRE KILOMETRE INCH PETROL CENTEMETRE ARE LITER KILOGRAM RETAIL MAGNUM L TEACHER AREA ACRES PINTS
WordClue
INCHlitre - gallon, centemetre - ?
MILElitre - gallon, kilometre - ?
UNITcarat or gallon
YARDlitre - gallon, metre - ?
CURIEnon-SI unit of radioactivity
FARADunit of capacitance
HERTZSI unit for frequency
LITREyard - metre, gallon - ?
METREgallon - litre, yard - ?
MONTHunit of time dividing the year
OUNCEunit of mass
PENNYunit of currency in various countries
POUNDlitre - gallon, kilogram - ?
QUARTunit of volume
GALLONhectare - acre, litre - ?
HECTAREyard - metre, acre - ?
HUNDREDFranklin, yard
KILOGRAMgallon - litre, pound - ?
KILOMETREgallon - litre, mile - ?
CENTEMETREgallon - litre, inch - ?
INCHlitre - gallon, centemetre - ?
POUNDlitre - gallon, kilogram - ?