hectare - acre, centemetre - ?

INCH
List of words for the clue hectare - acre, centemetre - ? from the crossword:
ROO MILE KILOMETRE ARE LITRE KILOGRAM ROOD AREA YARD POUND METRE GALLON TEACHER ACRES EEYORE ROODS WISE POOH WINNIE
WordClue
ACREmetre - yard, hectare - ?
MILEhectare - acre, kilometre - ?
UNITinch or mile
YARDhectare - acre, metre - ?
LITREinch - centemetre, gallon - ?
METREacre - hectare, yard - ?
POUNDhectare - acre, kilogram - ?
GALLONhectare - acre, litre - ?
HECTAREinch - centemetre, acre - ?
KILOGRAMinch - centemetre, pound - ?
KILOMETREacre - hectare, mile - ?
CENTEMETREacre - hectare, inch - ?
WEEKhebdomad, sennight
POUNDhectare - acre, kilogram - ?