11. The cylindrical columns in the shopping mall need to be repainted. Each of the 28 columns is 14 feet tall and measures 56 1/2'' around. The paint you've chosen is advertised to cover 400 square feet per gallon. A. compute the surface area of each column, and the total surface area of all the columns to be painted. ( Round the final answer to the nearest square foot.) B. How many gallons of paint will be needed? (Round up to the nearest gallon.)