Question

the cost of whitewashing the four walls of a room of dimensions lenght = 7m, breadth = 6m and height = 5m at the rate of Rs 100/m2 is

Answer 1

Answer:

The cost of whitewashing the four walls of a room of dimensions lenght = 7m, breadth = 6m and height = 5m at the rate of Rs 100/m2 is Rs 13000.

Step-by-step explanation:

Given :

Length = 7 m

breadth = 6m

height = 5m

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

$= 2 \times 5 (7 + 6)\\= 10 (13)\\= 130 sq. m$

The cost of whitewashing of four walls of room $= 130 \times 100 = Rs 13000$

Answer 2

Step-by-step explanation:

length=7m

breadth=6m

height=5m

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

=2×5(7+6)

=10(3)

130sq.m