Ndiphiwe

A lighthouse is 10 m high and is situated on a vertical cliff which is 70 m above sea-level.The beam of light from the is 192 m from the foot of the cliff.how long is the beam of light at that instant?

The diagonal of a rectangle measures 7,4 m and one side is 2,4 m.calculate the length of the other side.

b^2=192^2+(70+10)^2 b^2=b^2/^2=80/^2 x=40m