Question

What is the difference in height between a point 270 m above sea

level and 80 m below sea level?​

Answer 1

Answer:

Height above sea level =+270m

Height below sea level =−80m

Difference =+270−(−80)

=270+80=350m

Answer 2

Answer:

Height above sea level =+270m

Height below sea level =−80m

Difference =+270−(−80)

=270+80=350m