Question: A new homeowner has a triangular- shaped back yard. Two of the three sides measure 53 ft and 42 ft and form an included angle

A new homeowner has a triangular- shaped back yard. Two of the three sides measure 53 ft and 42 ft and form an included angle of 135°. To determine the amount of fertilizer and grass seed to be purchased, the owner must know, or at least approximate, the area of the yard. Find the area of the yard to the nearest square foot.

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