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find the area of a triangle with side lengths of 5, 10, and 12.
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the area of a triangle with side lengths of 5, 10, and 12 is 30 units squared. this can be found by using heron's formula, which is a = sqrt(s(s-a)(s-b)(s-c)) where s = (a+b+c)/2. in this case, s = (5+10+12)/2 = 17.5, a = sqrt(17.5(7.5)(4.5)(2.5)) = 30 units squared.
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