Question

30. What is the difference in height between a point 150m above sea level and 40m below sea level?​

Answer 1

Answer:

let the point below sea level be taken as -40 m.

so, the point above sea level would be +150 m.

Calculate the sum.

150+(-40)

=150-40

=110 m

Answer 2

Answer:

Height of place A =150m from sea level

Height of place B = -40m from sea level (i.e. 40metres below)

So, difference in the heights is 150- (-40) = 150+40 =190m