Question

The area of the four walls of a hall room is 336 sq m. The breadth and height of the room are 18 m and 4 m respectively.Find the length of the hall room
Answer aya ha 24 m​

Answer 1

Answer:

The length of the hall room is 24m.

Step-by-step explanation:

The area of the four walls of the hall room = 336m²

The breadth of the hall room = 18m

The height of the hall room = 4m

The area of the four walls gives the lateral surface area of the cuboidal hall room.

The Lateral Surface Area (LSA) of a cuboid is given the formula = 2h (l+b)

where h is height, l is length and b is breadth of the cuboid.

We know the LSA = 336m²

336 = 2 × 4 (l + 18)

336 = 8 × (l + 18)

l + 18 = 336 ÷ 8

l + 18 = 42

l = 42 - 18

l = 24.

Hence the length of the hall room is 24m.