Answer :
so xy means x times y
guide:
l=legnth
w=width
h=height
b=base
formula for triangle=1/2bh
formula for rectangle=lw
formula for square=l^2=w^2=lw
paralellogram is the same as rectangle=lw
guide:
l=legnth
w=width
h=height
b=base
formula for triangle=1/2bh
formula for rectangle=lw
formula for square=l^2=w^2=lw
paralellogram is the same as rectangle=lw