Question

The floor of a rectangular hall has a perimeter 150 m. If the cost of painting the four walls at the rate of rupees 10 per m^2 is rupees 9000, find the height of the wall. (6m)

Answer 1

Answer:

The floor of a rectangular hall has a perimeter 150 m. If the cost of painting the four walls at the rate of rupees 10 per m^2 is rupees 9000, find the height of the wall. (6m)

Step-by-step explanation:

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Answer 2

Answer:

Height - 6m

Solution-perimeter=2(a+b)=150m

So a+b=75

And a=75-b

Now total area of 4 walls =9000/10=900

Let height be c

So 2(ac+bc)=900

ac+bc=450

(75-b)c+bc=450

C=450/75=6m

hope it helps

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Step-by-step explanation: