Question

the length, breadth and height of a room is 5m, 4m, 3m.the cost of white Washing it's four walls at the rate of rs7. 50 per metre saare? ​

Answer 1

Answer:

Rs. 555

Step-by-step explanation:

Length, breadth and height of a room are 5 m, 4 m and 3 m.

Area of four walls of the room =2h(l+b)

=2×3(5+4)

=6(9)

=54 sq m

Area of the ceiling =l×b

=5×4

=20 sq cm.

Total area of the four walls and the ceiling of the room

=54+20

=74 sq cm

Cost of white washing = Rs 7.50 per sq m

Total cost of white washing =74×7.50= Rs 555

PLEASE MAKE ME AS BRAINLIEST.......