Question

A rectangular room thrice as long as it is board is 5m high and it contains 60 cubic metre air . Find its length and breadth

Answer 1

given,
height equal 5 m
India equals to 60 m
To find
length and breadth

let breath equals to x centimetre
and let length equals to 3 in x m
area of cuboid=l*b*h
so
x*3x*5=60m
3x^2=60/5
= 12
x^2 =12/3
=4
x=2m
hence breadth =2m
length=3*2
=6m