The internal measure of a cuboidal room are 12m×8m×4m. find the total cost of white washing all the four walls of a room,if the cost of white washing is ₹15m square.
Answers
Answer:
The total cost of white washing all four walls of the given room of dimensions 12m×8m×4m when the cost per square meter is Rs15 is Rs240.
Step-by-step explanation:
Length of the room = 12m
Breadth of the room = 8m
Height of the room = 4m
The total area of the four walls of the room is the lateral surface area (LSA) of the cuboid.
LSA = 2 × height × (length + breadth)
= 2 × 4 × (12 +8)
= 8 × 20
= 160m².
That is the total area of the four walls of the room is 160m².
Now, the cost of white washing per square meter = Rs15
Therefore the total cost = 15 × 160
= 240.
That is, the total cost for white washing all four walls of the given room of dimensions 12m×8m×4m when the cost per square meter is Rs15 is Rs240.