A= 0.5 m x 20 cm

Answer 1

A= 0.5 m x 20 cm

A = 50 * 20

Answer 2

but I don't get how to tell if it is m or cm

Answer 3

0.5 m = 50 cm

Answer 4

Does the question ask for it to be in cm or m? If it is supposed to be in cm then the answer is A = 50 cm x 20 cm
if it is supposed to be in m then the answer is A = .5m x .2m