Question

transforma em segundos ?
a) 3 h 45 min ?

b) 1h 30 min?​

Answer 1

a)

$\boxed{\boxed{\mathsf{3h:45min=3\times3600+45\times60=13500s}}}$

b)

$\boxed{\boxed{\mathsf{1h:30min=3600+30\times60=5400s}}}$