Question 1034555: A farmer has a triangular field besides 120 yards, 170 yards, and 220 yards. Find the area of the field in square yards.
Answer by addingup(3677)   (Show Source):
You can put this solution on YOUR website! Knowing all three sides we can use Hero's formula:
Let a, b, c be the sides
Let p = 1/2 perimeter
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Perimeter: a+b+c = 120+170+220 = 510
p = 510/2 = 255
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Hero's formula:
√p(p-a)(p-b)(p-c) = √255(255-120)(255-170)(255-220) = 10,120 or if you want to be super precise: 10,119.99876
John
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