Question

The area of the 4 walls of a room is 168m2 . the breadth and height of the room are 10 m and 4m respectively. find the length of the room.

Answer 1

Hlo friend.. Cutiepie Here..

Here is ur answer :

Given, Area of 4 walls of room = 168 m²

Height h of room = 4 m

Breadth b of room = 10 m

We have to find Length of room.

Let the length be l.

A. T. Q

2 h ( l + b) = 168


2 × 4 ( l + 10) = 168


$= 8(l + 10) = 168$


$(l + 10) = \frac{168}{8}$


$(l + 10) = 21$


$l \: = 21 - 10$


$l = 11$



Therfore, length of room = 11 m

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HOPE IT HELPS YOU...

REGARDS
@sunita