The endpoints of the longest chord on a circle are (4, 5.5) and (4, 10.5).
the center of the circle is at the point , and its radius is units. the equation of this circle in standard form is what?

the given 6 = w/p is equivalent to 6p = w, where w is the total area of the walls and p is the area covered by a single can of paint.

knowing that 6 cans of paint will be needed, 6p = w becomes 6(6) = w = 36.   this tells us that the total area to be painted is 36 square units.