Question

The floor of a rectangular hall has a perimeter of 250m. If it's height is 4mFind the cost of painting its four walls at the rate of Rs.12
per m square.

Answer 1

area of 4 walls=perimeter × h= 250×4 =1000m.sq.
hence cost of painting = 1000×12=12000Rs.
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Answer 2

Answer:

given:

perimeter  of the floor : 250m

height: 4m

cost of painting per square meter :RS12

area of 4 walls  = perimeter of the floor × no .of walls

      = 250×4

      = 1000

hence the cost of painting = area of 4 walls × cost of painting for per m square

= 1000×12

=RS 12000

answer=cost of painting 4 walls = RS 12000

Step-by-step explanation:

at first write the given details

now find the area of the 4 walls = area of floor × 4

= 250 × 4

= 1000m square

now we can find the cost of painting the 4 walls =

area of 4 walls × cost of painting per m square

= 1000 × 12

= RS 12000