Question

The radius of the base if a cylindrical coloumn of a building is 25cm and its height 3.5m. it costs RS 15.50 per sq. m to paint this coloumn. what will it costs to paint 10 such coloumn?

Answer 1

using curved surface area = 2×22/7×25/100×3.5 = fir jo answer aye ga use Rs 15.50 s multiple krdna usse ek ki cost nikl jye gi ...fir cost of cylinder Ko 10 s multiple krna to 10 ki nikl jye gi ...