6.
2
Area of grass for 1 cow to graze = 864 = 48
2
18
7.
2
2
Total area of all the 16 triangles = (16 x 88.2) cm = 1411.2 cm (approx.)
2
Cost of polishing the tiles = Rs. 0.5 per cm
∴ Cost of polishing all the tiles = Rs. (0.5 x 1411.2) = Rs. 705.60 (approx.)
2