The volume of the room is 80m3. The width of the room is 5m and the height is 4m. Find the floor area of this room.

Let’s calculate the area of the room, provided that its volume is 80 m³, and the height = 4 m, and the width = 5 m according to the formula:

S = a * b. First of all, we find the length, we can express them from the formula for the volume of a rectangular parallelepiped:

If V = a * b * c. Therefore, to find the first factor, the product must be divided by other known ones:

a = V: b: c = 80: 5: 4 = 4 m – is the length of the room.

Substitute the obtained values into the formula for the area:

S = 5 * 4 = 20 m².