Question

A room is 10 m long, 8 m wide, and 5 m high. Find the area of its four walls.

A) 220 m²
B) 340 m²
C) 180 m²
D) 200 m²

Answer 1

The area of the four walls of the room is 180 m².

Step-by-step explanation:

To find the area of the four walls of a rectangular room, we need to calculate the perimeter of the room and then multiply it by the height of the walls. The perimeter of the room can be found by adding the lengths of all four sides. In this case, the length is 10 m and the width is 8 m, so the perimeter is 2(10 m + 8 m) = 36 m.

Next, we multiply the perimeter by the height of the walls, which is 5 m. So the area of the four walls is 36 m * 5 m = 180 m².

Therefore, the correct answer is C) 180 m².