An artist is painting the outside of the box shown below. The top and bottom will NOT be painted. What is the total surface area
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Well the line that bisects RS, will cut RS in two equal halves, therefore, that line will cut RS perpendicularly at the midpoint of RS.
now, what the dickens is the midpoint of RS anyway?
so, we know that perpendicular line, will have to go through (2, 11/2)
now, a perpendicular line to RS, will have a negative reciprocal slope to it. Well, what is the slope of RS anyway?
and let's check the reciprocal negative of that,
so, then, what's is the equation of a line whose slope is 6, and goes through 2, 11/2?
now, what the dickens is the midpoint of RS anyway?
so, we know that perpendicular line, will have to go through (2, 11/2)
now, a perpendicular line to RS, will have a negative reciprocal slope to it. Well, what is the slope of RS anyway?
and let's check the reciprocal negative of that,
so, then, what's is the equation of a line whose slope is 6, and goes through 2, 11/2?