calculate the total area of the walls of a room 5m long 4m wide and 2.5m high

They are asking for the WALLS area, not including the ceiling and floor.

There are two walls of 5 x 2.5 sq. meter area and two walls of 4 x 2.5 sq. meter area.

A = 2[(2.5*5) + (2.5*4)]
= 2*2.5*(4+5) = 5*9 = ____ m^2 ?

241.4

Calculate the total area if the walls of a room 5m long by 4m wide and 2.5 m high. Calculate

the area of the ceiling of the room.

To calculate the total area of the walls of a room, you need to find the sum of the areas of all four walls. The formula to calculate the area of a wall is:

Area = Height × Width

In this case, the room is 5m long, 4m wide, and 2.5m high. Since the height of the walls is given, we can assume that the walls extend to the full height of the room.

First, let's calculate the area of the lengthwise walls:

Area of the first lengthwise wall = Height × Width
Area of the first lengthwise wall = 2.5m × 4m

Since there are two lengthwise walls that have the same dimensions, we need to multiply this result by 2 to account for both walls:

Total area of the lengthwise walls = 2 × Area of the first lengthwise wall

Next, let's calculate the area of the widthwise walls:

Area of the first widthwise wall = Height × Length
Area of the first widthwise wall = 2.5m × 5m

Again, since there are two widthwise walls with the same dimensions, we multiply this result by 2:

Total area of the widthwise walls = 2 × Area of the first widthwise wall

Finally, to find the total area, add the two areas calculated above:

Total area of the walls = Total area of the lengthwise walls + Total area of the widthwise walls

Now, substitute the calculated values into the equation to get the final result.