Question

The floor of a rectangular hall has a perimeter 250 metre if the cost of the painting for walls @ rupees 10 per metre square is rupees 15000 find the height of the wall

Answer 1

Answer:

6m.

Step-by-step explanation:

area of 4walls equal to RS. 15000*metre square/RS.10

equal to 1500 metre square

perimeter of floor equal to 250m.

A/Q

2(l+b) *h equal to area of 4 walls

250m.*h equal to 1500 metre square

h equal to (1500/250) m.

h equal to 6m.

Answer 2

Step-by-step explanation:

Let length, breadth, and height of the rectangular hall be l, b, and h respectively.

Area of four walls = 2lh+2bh

= 2(l+b)h

Perimeter of the floor of hall = 2(l+b)

= 250 m

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

Cost of painting per square meter area = Rs.10

Cost of painting 250h square meter area = Rs (250h×10) = Rs.2500h

However, it is given that the cost of paining the walls is Rs. 15000.

15000 = 2500h

Or h = 6

Therefore, the height of the hall is 6 m.