Question

10 I was 4 km cast of my
11 A deep-sea diver is 4.5 m below the water level. At what depth is he now? At what height is he
now?
Note: The mean sea level is considered to be the zero level.
We entered the lift on the 16th floor. We got out of the lift on the 4th floor. How many floors die​

Answer 1

Depth= sea level - his distance according to water level

= 0- (-4.5) m

= 0+ 4.5 m

= 4.5 m

His height = sea level + his distance according to water level

= 0+ (-4.5)m

= (-4.5)m