What architectural feature did the greeks used that is very recognizable

An object weighs 40n in air , weighs 20n when submerged jn water and 30n submerged in a liquid of unknown density .what is the density of the liquid?

Figure out who is lying and telling the are 2 truth telers and 3 liarsperson a says person e is lyingperson b says person c is lyingperson c says person b id lyingperson d says person b is telling the truthperson e says person c is telling the truth

What where 3 negative things about the georgia state flag