SOLUTION: The lengths of the sides of a non-right triangle are 17 inches, 9 inches, and 12 inches. Find the area of the triangle. Round to the nearest tenth.

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first we need to find the perimiter
17+9+12=38
now we need to divide this number by 2
38/2=19 this number is x in the formula:
a=sqrt[x(x-17)(x-9)(x-12)]
a=sqrt[19(2)(10)(7)]
a=sqrt[2660]
a=51.58 answer for the area of this triangle.