Question 556060
You don't paint the floor, so surface area in m2 =
{{{ 6*5 = 30 }}} m2 for ceiling
{{{ 2*5*4 = 40 }}} m2 for 2 facing walls
{{{ 2*6*4 = 48 }}} m2 for the other 2 facing walls
The total area is {{{ 30 + 40 + 48 = 118 }}} m2
{{{ 118 / 15 = 67.867 }}} gallons
68 gallons of paint is needed