Question

one room length 12.8 and breadth equals to 850 CM inside that room there is a bad length is 300 cm and breadth is 400 cm find the remaining surface area of the room and the answer will be in cm​

Answer 1

`Area = 968000cm^2`

Explanation:

To be able to answer this question properly. I'll assume the length of the room is in meters.

So for the room, we have:

`Length = 12.8m`

`Breadth = 850cm`

For the bed, we have:

`Length = 300cm`

`Breadth = 400cm`

First, we calculate the surface area of the room.

`A_1 = 12.8m * 850cm`

Convert all units to cm

`A_1= 12.8*100cm * 850cm`

`A_1= 1 088 000 cm^2`

Next, we calculate the area of the bed

`A_2 = 300cm * 400cm`

`A_2 = 120000cm^2`

The area of the space left is the difference between A1 and A2

`Area = A_1 - A_2`

`Area = 1088000cm^2 - 120000cm^2`

`Area = 968000cm^2`