Question

if the wage of painting of 4 walls of a room of an area 256 m^2 is Rs. 1024. Find the area of the four walls if the total wage for painting is Rs. 768

Answer 1

Answer:

Given Length of the room = 6m

Given Breadth of the room = 4m

Given Height of the room= 2.5m

As the room is in a cuboidal shape

therefore to find the cost of painting the

walls at 25 per sq. m, We first need to

find out the Area of four walls of the room

Lateral Surface area of Cuboid = Area of

four walls of the room

Therefore, Lateral surface area or Area of

four walls = 2( + b}h

where, I is the length, b is the breadth

and h is the height of the room

put the given values of I,b and h in the

formula.

26+ 4)2.5

2 x 10 x 2.5

=>20 x 2.5

>50 sq. m

Now, Cost of painting 1 sq. m = {25

Cost of painting 50 sq. m= 25x 50=

1250