Question

please answer this question

Answer 1

This is the answer of the question

Answer 2

$total \: surface \: area = {126m}^{2}$
length=6m
breadth=5m
let height be h

surface are of cuboid=2(lb+bh+lh)
126=2(6×5+5×h+6×h)
126=2(30+5h+6h)
126=2(30+11h)
$\frac{126}{2} = 30 + 11h$
63-30=11h
33=11h
$h = \frac{33}{11}$
h=3

therefore,

height is 3 metre.