Question

The floor of a room is square in shape and its area is
25 square metres. What is the total area of its four
walls, if the height of the room is 4 metres ?
$with full explation$
$i know theanswer$
$but inotexplain$
$answeris80m {}^{2}$
​

Answer 1

Answer:

80m square.

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Step-by-step explanation:

first, we find the length of each side of the floor (length and breadth of the square)

we can find this through this formulae: 25 = x square.

the square root of 25 = 5 = length or breadth of room.

since the floor of the room is a square, the area of each of the walls is equal.

we also know that the area of one wall is height x length of side

= 4 x 5 = 20.

so, the area of 1 wall is 20m square.

to find the area of 4 walls of the same area, we multiply its area by 4.

= 20 x 4 = 80m square