Question

3. The perimeter of the floor of a room is
18 m. What is the area of the walls of the
room, if the height of the room is 3 m?
(1) 21 m(2) 42 m2 (3) 54 m2
(4) 108 m2
​

Answer 1

Answer:

f the floor is in rectangular shape

Then your answer is,

Perimeter of rectangle =2(l+b)

18=2(l+b)

Then,

Area of four walls =2(l+b) *h

Area of four walls=18*3

Area of four walls =54m²

Step-by-step explanation: