Question

the area of 4 walls of a room is 168 m
$the \: area \: of \: 4\: walls \: of \: a \: room \: is\: 168 \: m {}^{2}.the \: breadth \: and \:height \: of \: the \: room \: are \: 10 \: m \: and \: 4 \: m \: respectively.find \: the \: length \: of \: the \: room.$

Answer 1

the area of 4 walls is 168m^2
imagine the length of the room is c metre
so,according to the question

2(10+4)×c=168
or, c= 168/28
or, c= 6m
so the length will be 6m
hope it helps...