Question

preeti is painting the walls and ceiling of hall whose diameter are 18 m 15m 5m from each can of paint 120m of area. how many cans are required

Answer 1

area to be painted = 2( bh + hl) + lb
                                =2( 90 + 75) + 270
                                =2 (165) + 270
                                =330 + 270
                                = 600. sq.meter
no. of cans = 600/120 = 5 cans ANSWER.
thanks...