Three sides of a triangular field are 20m, 21m and 29m long respectively. The area of the field is ____.
The sides of a triangular field are 325m, 300 m and 125 m. Its area is
Three horses are tethered with 7 meter long ropes at the three corners of a triangular field having sides 20 m, 34 m and 42 m. The area of the plot which can be grazed by the horses is