Question

the Length breadth and height of the room are 9 metre, 7.5m, 4.5m respectively find the area of four walls and area of a floor of the room​

Answer 1

Answer:

hye

here is your answer

..

Answer 2

Given :-

• Length of a room = 9m
• Breadth of a room = 7.5m
• Height of a room = 4.5m

⠀

To find :-

1. Area of four walls of the room.
2. Area of floor of the room.

⠀

Solution :-

• As we know that area of four walls means the lateral surface area of the cuboid.

⠀

The formula is given by

☆ LSA = 2(L + B)H

⠀

→ LSA = 2(9 + 7.5) × 4.5

→ LSA = 2(16.5) × 4.5

→ LSA = 33 × 4.5

→ LSA = 148.5 m²

⠀

Now, floor of a room is in the shape of rectangle. Therefore it's area is given by

⛦ Area = L × B

⠀

→ Area = 9 × 7.5

→ Area = 67.5 m²

⠀

Hence,

1. Area of four walls is 148.5 m²
2. Area of the floor is 67.5 m²

⠀

★ Total area will be 216 m².