The floor of a rectangular hall has a perimeter 250 m. If the cost of painting the four walls at the rate of `R s 10 p e r m^2`is Rs 15000, find the height of the hall.[Hint : Area of the four walls = Lateral surface area.]

The floor of a rectangular hall has a perimeter 250 m. If the cost of

1.	The floor of a rectangular hall has a perimeter 250 m. If the cost of painting the four walls at the rate of `R s 10 p e r m^2`is Rs 15000, find the height of the hall.[Hint : Area of the four walls = Lateral surface area.]
Answer» LSA=2(lb+bh) X=2(l+b)h X=250h-(1) `1m^2=Rs10` `Xm^2=Rs15000` `10X=Rs15000` `X=Rs1500` from equation 1 250h=1500`m^2` h=6m.

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The floor of a rectangular hall has a perimeter 250 m. If the cost of painting the four walls at the rate of `R s 10 p e r m^2`is Rs 15000, find the height of the hall.[Hint : Area of the four walls = Lateral surface area.]

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