Question

Find the area of the 4 walls of the room whose length,breadth and height are 9m,6m

and 4m ,Find the cost of white washing the walls at the rate of ₹12 per sq. m
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Answer 1

Answer:

answer is₹440

hope its useful..

Answer 2

Given

We have given the length , breadth and height of the four walls of the room are 9m,6m & 4m respectively.

To find

We have to its area and hence the cost of white washing the walls @₹ 12 per sq.m

$\sf\huge\bold{\underline{\underline{{Solution}}}}$

Since, all dimensions of four walls are given so,we can easily find its area by using the formula :

Area of four walls = 2(l+b)×h

Where ,l is the length ,b is the breadth and h is the height.

Area of four walls = 2(9+6)×4

Area of four walls = 2(15)×4

Area of four walls = 30×4=120m²

Now, cost of white washing the m²= ₹12

If we Multiply the cost with the given area we can find out the cost of white washing the walls

➙₹12×120

➙₹ 1440

Hence,cost of white washing the four walls is ₹1440