Uma makes a scale drawing of a patio. The drawing below shows the two scales she used to plan two patios of different sizes.

Scale 1: 1 centimeter = 3 meters. Scale 2: 1 centimeters = 4 meters. Triangle A B C. Side A is 9 centimeters, side B is 12 centimeters, and side C is 15 centimeters.
Which shows the correct lengths of side C in both scales?
Scale 1: 45 m; Scale 2: 60 m
Scale 1: 60 m; Scale 2: 45 m
Scale 1: 36 m; Scale 2: 27 m
Scale 1: 27 m; Scale 2: 36 m

help
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Which is the scale factor proportion for the reduction shown?

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Sienna planned a rectangular pool, as shown in the scale drawing below.

A rectangle with length 11 inches and width 7 inches.
She decides to change the length, the longer side of the pool, from 22 ft to 27.5 ft. Which expression finds the change in the scale factor?