Question

A hall has 4 windows, each 4 m wide and high,2 doors each 2.5 m tall and 1m wide.If a hall is 20m long, 18m wide, and 6m high, find the cost of painting it's wall at 38 per m²

Answer 1

Answer:

CSA of cuboid - 4 x area of windows - 2 x area doors x cost = 14706 Rs.

Answer 2

Answer: Rs 14706

Step-by-step explanation:

L = 20 m

B = 18 m

H = 6 m

Surface area = lateral surface area of hall - area of doors + Windows

= 2(L + b ) H - [4(4 × 4) + 2(2.5 × 1)]

= 12(38) - [64 + 5]

= 456 - 69

= 387 m^2

Now m^2 = rs 38

Cost of painting the hall = 387 × 38

= rs 14706

Hope it helps