Question 310946
The area of the switch plate = area of square plate - the area of the square hole.

Area of sq. plate = 4*4 = 16 sq. inches
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Area of square hole = 1*1=1 sq. in

Area of plate = 16-1= 15 sq. in

1 sq. inch  cost $2.75
15 sq. in costs 2.75 * 15 =41.25