Question

the area of the four wall of aroom is 80 cm2 and it's height is 4m then find the perimeter of the ​

Answer 1

Proper Question

The area of the four wall of a room is 80 m²  and it's height is 4m then find the perimeter of the ​floor ?

Solution

Area of the four walls of the room = 80 m²

Area of a rectangle = 2(l+b)h (where l , b and h are length , breadth and height of a rectangle respectively.)

Here,

2(l+b)h = 80 cm²

Height of the room is given as 4m.

$\sf 2(l+b) 4 = 80$

$\sf 2(l+b) = \dfrac{80}{4}$

2(l+b) = 20 cm.

We know that 2(l+b) is the formula for finding perimeter of a rectangle .

∴ Hence Perimeter of the room = 20m

Answer 2

Answer:

20 m is the answer

Step-by-step explanation:

explanation in above answer by jackzz..

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