Find the area of a parallelogram if a base and corresponding altitude have the indicated lengths. base x yards, altitude 3y feet. (1/3)xy sq. ft. 3xy sq. ft. 9xy sq. ft.

The area of a palalelogram by definition is given by:
 A = (b) * (h)
 Where,
 b: base
 h: height
 We must also take into account the following conversion:
 1 yard = 3 feet
 Substituting the values (in feet) we have:
 A = (3x) * (3y)
 A = 9xy feet ^ 2
 
 the area of a parallelogram is:
 9xy sq. ft.

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