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Hashen wants to put up fencing around three of his rectangular yard and leave a side of 20 feet unfenced. If the yard has area of 680 square feet, How many feet of fencing does he need?

Hashen wants to put up fencing around three of his rectangular yard and leave a side of 20 feet unfenced. If the yard has area of 680 square feet, How many feet of fencing does he need? Correct Answer 88

আয়তাকার yard - এর ক্ষেত্রফল 680 বর্গফুট আয়তাকার yard - এর one side 20 ফুট ∴ yard - এর অন্য side = 68020 = 34 ফুট ∴ আয়তাকার yard - এর 3 side - এ বেড়ার প্রয়োজন হবে (2×34) + 20 = 44 ফুট

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A rectangular field will be fenced on three sides leaving a side of 20 feet uncovered. If the area on the filed is 680 squares feet, how many feet of fencing will be required?
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