Question

# If 4L + 2B + 3H = 228 metres, where L : B : H = 3 : 2 : 1, then the area of 4 walls of the room is

- 1480 m
_{2}
- 1440 m
_{2}
- 1460 m
_{2}
- 1420 m
_{2}

_{2}_{2}_{2}_{2}## The correct answer is: 1440 m_{2}

### To find the area of the four walls of the room.

4L + 2B + 3H = 228 metres and L : B : H = 3 : 2 : 1.

H= L/3

B=2L/3.

4L+ 2 x 2L/3 + 3 x L/3 = 228

L = 36

B = 24

H = 12.

Area of room = 2H(L + B ) = 2 x 12(36 + 24) = 1440 sq meters.

Therefore, the area of the room is 1440 sq meters..

### Related Questions to study

### The total area of 4 walls of a room is 120 m2 Its height is 2 metres If the floor in the form of a square, find the total cost of flooring at the rate of Rs 78 per m2 and painting the ceiling at the rate of 126 per m_{2</sub}

Cost of flooring and painting for the ceiling is Rs 45900.

### The total area of 4 walls of a room is 120 m2 Its height is 2 metres If the floor in the form of a square, find the total cost of flooring at the rate of Rs 78 per m2 and painting the ceiling at the rate of 126 per m_{2</sub}

Cost of flooring and painting for the ceiling is Rs 45900.

### The difference between the circumference and radius of the Circle is 37 cms The area of the Circle is

Therefore, the area of the circle is 154 cm².

### The difference between the circumference and radius of the Circle is 37 cms The area of the Circle is

Therefore, the area of the circle is 154 cm².

### Find the Area of four walls of a room 13 m long and 8 m wide and 5 m high

Therefore, the area of four walls of a room is 210 m².

### Find the Area of four walls of a room 13 m long and 8 m wide and 5 m high

Therefore, the area of four walls of a room is 210 m².

### The Surface Area of a Cube is 864 sq cm Find its side

Therefore, the side of cube is 12cm.

### The Surface Area of a Cube is 864 sq cm Find its side

Therefore, the side of cube is 12cm.

### Find the Surface Area of a Cuboid whose l = 3.5 m , b = 2 m , h = 75 cm

Therefore, the surface area of cuboid is . So, from the given options, there is no option as . Hence, answer is none of these.

### Find the Surface Area of a Cuboid whose l = 3.5 m , b = 2 m , h = 75 cm

Therefore, the surface area of cuboid is . So, from the given options, there is no option as . Hence, answer is none of these.

### A 5 m long, 3.5 m broad and 80 cm deep well is dug What is the volume of the earth taken out of it ?

Therefore, the volume of the earth = .

### A 5 m long, 3.5 m broad and 80 cm deep well is dug What is the volume of the earth taken out of it ?

Therefore, the volume of the earth = .