Question

Example 5: The internal measures of a cuboidal room are 12m x 8m x 4m. Find the
total cost of whitewashing all four walls of a room, if the cost of white washing
m². What will be the cost of white washing if the ceiling of the room is also Whitewashed.​

Answer 1

Answer:

cost of white washing per sq mt is missing in question given above.

anyways ,

we have l = 12 mt, b = 8mt ,h = 4 mt

so area of four wall = 2 (l + b )h

and area of ceiling = l×b

then add both areas and multiply it by per sq mt cost.