Question

11. A room 9 m long, 6 m broad and 3.6 m high has one door 1.4 m by 2 m and two windows, each
1.6 m by 75 cm. Find :
(1) the area of 4 walls, excluding doors and windows;
(ü) the cost of white-washing the walls from inside at the rate of * 22.50 per m²;
(ii) the cost of painting its ceiling at * 25 per m².​

Answer 1

Step-by-step explanation:

1)area of four walls =9×6×3.6=164.4

2)164.4×22.50=3699

9×6=54×25=1350