Question

the area of four walls is 192 m sq. the breadth and height of the room are 10m and6m respectively. find the length of room

Answer 1

192=2(L+B)×h
192=2(L+10)10
192=(2L+20)10
192=20L+200
20L=8
l=8/20

Answer 2

$<b><font face=Copper black size=4>$Given,

For the room

Area of the four walls = 192 m^2

Breadth = 10 m

Height = 6 m

Let the length be L m.

We know that

Area of four walls = 2H (L + B)

=> 192 = 2 × 6 (L + 10)

=> 192 = 12 (L + 10)

=> 192 = 12L + 120

=> 192 - 120 = 12L

=> 72 = 12L

=> L = 72/12

=> L = 6

•°• The length of the room is 6 m.