Question

A cylindrical container without lid has inner diameter 40 cm and depth 10 cm. It needs to be coated on the inner walls which costs Rs. 6000 per m^2 of area. Find the cost of this paint job.

Answer 1

Answer:

CSA=2π(20)(10)=400π

Area of base=π(20)(20)=400π

Area to be painted=400π +400π=800π

Cost=800×22/7×1/10000×6000=1508(approx)

Answer 2

Answer:

CSA=2π(20)(10)=400π

Area of base=π(20)(20)=400π

Area to be painted=400π +400π=800π

Cost=800×22/7×1/10000×6000=1508(approx)

HOPE IT HELPS:)