Phillip advised his clients they needed to paint their master bedroom before showing the property. the walls of this room were 11' high. the wall lengths were 13', 19', 13', and 17'. if a gallon of paint covers 180 sf, how many whole gallons would the homesellers have to buy

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have