Question

the floor of a rectangular hall has a perimeter 250m. lf the cost of paintibf the four walls at the rate of₹ per m^ is 15000,find the height of the height of the hall [Hint:area of the four walls =Lateral surface area

Answer 1

Perimeter of rectangular hall = 2(l + b) = 250 m

Total cost of painting = Rs.15000

Rate per m2 = Rs.10

Area of four walls = 2(l + b) h m2 = (250×h) m2

A/q,

(250×h)×10 = Rs.15000

⇒ 2500×h = Rs.15000 

⇒ h = 15000/2500 m

⇒ h = 6 m 

Thus the height of the hall is 6 m.

Answer 2

Answer:60metres

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