A triangular parcel of land has sides of lengths 870 feet, 140 feet and 869 feet.

a) What is the area of the parcel of land?
Round your answer to 2 decimal places
Area =  

b) If land is valued at $2500 per acre (1 acre is 43,560 feet2\displaystyle \text{feet}^{{2}} ), what is the value of the parcel of land?
Round your answer to 2 decimal places.


value =