Question

The length, breadth and height of a room are 5.5 m, 3.2 m and 3 m respectively. Find the cost of (1) paint
ing the walls at 10 per square metre,and (in whitewashing the ceiling at 1.50 per square metre,​

Answer 1

Answer: 578.4(altogether)

Step-by-step explanation: 2h(l+b)

2*3m*8.7m

= 52.2m²

1 m² costs  10

52.2 m² cost 522 (the cost of 4 sides of the room)

still the ceiling is left

it is a rectangle

area of a rectangle = l*b

= 5.5m*3.2m

= 17.6m²

1 m² costs 1.50

17.6m² cost 26.4

Total amount : 552+26.4

= 578.4

Separately the four walls cost 552

and the ceiling costs 26.4

Answer 2

Hope it helps you
Please mark me Brainliest