Math, asked by sandeepk91, 1 day ago

# 2 The length, breadth and height of a room are 5 m, 4m and 3 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of 37.50 per m² 111 TC1

1

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

Step-by-step explanation:

0

Rs 2775

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 37.50 per sq m

Total cost of white washing =74×37.50= Rs 2775

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