In a combined operation, the navy
and airforce have a helicopter and
submarine at the levels shown:
Helicopter: 230 m above sea level
Submarine: 80 m below the surface of
the ocean, directly under
the helicopter
A parachutist from the helicopter has
76 m to fall before hitting the ocean.
a How far is the parachutist from the
submarine?
b What distance from the helicopter is she?
c How far apart are the helicopter and
submarine?