Question

9. Mr. Jain got a room build at a dharmashala inner dimensions if room are length
= 5 m, breadth = 4 m and height = 3 m, what is area of floor in room.​

Answer 1

Given:

Mr. Jain got a room build at a Dharmashala inner dimensions if the room is length = 5 m, breadth = 4 m and height = 3 m,

To find:

What is the area of the floor in the room?

Solution:

We know,

$\boxed{\bold{Area \:of\:a\:rectangle = length \times breadth}}$

The inner dimensions of the room built at the Dharmashala:

Length = 5 m

Breadth = 4 m

Height = 3 m

Now, by using the above formula of the area of the rectangle, we get

The area of the floor of the room is,

= Area of a rectangle

= length × breadth

= 5 × 4

= 20 m²

Thus, the area of the floor in the room is → 20 m².

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Answer 2

Given:

length = 5 m  

breadth = 4 m  

height = 3 m

To Find:

Area of floor in the room

Solution:

The room consists of both wall and the ceiling,

Therefore,  

Area of wall = 2h ( l +  b)

= 2 x 3 ( 4 + 5 )

= 6 x 9

= 54  

Now, area of ceiling = l x b

= 5 x 4  

= 20

Thus, the total area of Room = Area of wall + Area of ceiling  

= 54 + 20  

= 74

Answer: The area of room is 74m.