Greg wants to find out which shape of sail will make his model schooner sailboat go fast enough to win the race on Saturday. The wind is forecasted to be 10 -20 miles per hour on the day of the race. He builds a triangular shaped sail, a rhombic shaped sail, a circular shaped sail, and a rectangular shaped sail. The current sail on the boat is square in shape. Greg know he must use the same amount of surface area for each sail so he decides to use 100 square centimeters of canvas for each sail.
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