Provide your best answer for the following math problem. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The problem is: if the sides of a triangle are 91 cm , 84 cm and 35 cm , what is its area ?
1470 cm 2
431.53 cm² (rounded to two decimal places).