Question

A School auditorium is 60 m long 40m broad and 30m high it has eight doors of 3m by 4 m each and six windows of the following

(a) the cost of painting the walls and the roof excluding the doors and windows at ₹. 25 per m^2 .

(b) carpeting the floor at 25 per m^2

Answer 1

(a) curved surface area + ceiling area
=> 2*30(60+40) + 60*40
=> 2*30*100+2400 => 6000+2400 => 8400m2
therefore cost => 25*8400 => rs.210000