A pole is vertically submerged in swimming pool, such that it gives a length of shadow 2.15 m within water when sunlight is incident at an angle of…

A pole is vertically submerged in swimming pool, such that it gives a length of shadow $\displaystyle 2.15$ m within water when sunlight is incident at an angle of $\displaystyle 30$° with the surface of water. If swimming pool is filled to a height of $\displaystyle 1.5$ m , then the height of the pole above the water surface in centimeters is ( $\displaystyle \mathrm{n}_{\mathrm{w}}=4 / 3$ ) $\displaystyle \_\_\_\_$