Question

Calculate the cost of panelling the four walls of a room, whose
dimensions are 3.8m × 4.5m × 3.5m at the rate of rs 285 per
square metre​ .
​

Answer 1

Step-by-step explanation:

area of room = 2 (3.8×4.5 + 4.5×3.5 + 3.5× 3.8)

= 2(46.15)

= 92.3 m^2

cost of panellng= 285× 92.3

=26305.5

Answer 2

Answer:

Length=3.8m,Breadth=4.5 m,Height=3.5 m

We know,

LSA=2(l+b)×h

LSA=2×8.3×4.5=74.7 m

Therefore, cost = 74.7×285=Rs.21289.5