The floor of a rectangular hall has a perimeter of `250 mdot` Its height is `6 mdot` Find the cost of painting its four walls (including doors, etc.) at the rate of R s .6 per square m e t r edot

Explanation

perimetre of floor`=250m`

`2(l+b)=250`

so `(l+b)=125`......(1)

given that `h=6m`

so area of four wall`=2h(l+b)`

`=2xx6xx125`

`=1500m^2`

so cost of painting `=1500xx6`

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