Question

the floor of a rectangular hall has a perimeter 300 CM let the cost of painting of four walls @ rupees 12 per centimetre square is rupees 24,000 and find the height of the hall​

Answer 1

area of four wall = LSA of cuboid

Area of four walls(LSA) = 24000÷12

=2000cm^2

LSA of cuboid = 2h(l+b)

2000 = 300×h

2000/300=h

h=20/3cm

h=6.66...cm