Answer:
#1:
Formula- length x width
Plug in values- 6 x 12
Area- 72 ft
#2:
Formula: base x height
Plug in Values: 3.7 x 12
Area: 44.4 m
#3:
Formula: base x height
Plug in Values: 2.2 x 8
Area: 17.6 cm
#4:
Formula: length x width
Plug in Values: 15 x 2.5 (2 1/2)
Area: 37.5 in