Due to sudden floods, some welfare associations jointly requested the government to get 100 tents fixed immediately and offered to contribute 50?

Given height of cylindrical part=4m
And height of conical pert=2.8m
Diameter of cylindrical part=Diameter of conical part=4.2m
Radius of cylindrical part=Radius of conical part=2.1m
The surface area of cylindrical part=2πrh=2×22/7×2.1×4=2×22×0.3×4=52.80 m2
Surface area of conical part=π×r×√r2+h2=22/7×2.1×√(2.8)2+(2.1)2=22×0.3×√7.84+4.41=6.6×√12.25=6.6×3.5=23.10 m2
The surface area of tent=Surface area of cylindrical part+Surface area of conical part=52.80+23.10=75.90 m2
Surface area of 100 tent=75.90×100=7590 m2
Cost of 100 tent=100×7590=Rs 759000
But 50