Verified answer

Answer:

area of lawn= 100×80 = 8,000m^2

area of swimming pool=30×10 = 300m^2

remaining area = 8000-300 = 7,700m^2

cost of putting grass in remaining area = 7,700×20 = 1,54,000

Answer:

Length of rest of field =100-30=70m

Breadth of rest of field=80-10=70m

Length and Breadth are same means it is a square So,

Area=70 into 70=4900m

Cost of putting grass in rest of field= 4900 into 70=rs.98000