A kite is high and of string is out

MATHEMATICS · Subjective · CBSE · Mathematics · Applications of Derivatives · Applications of Derivatives

Problem

A kite is

120\,\text{m}

high and

130\,\text{m}

of string is out. If the kite is moving away horizontally at the rate of

52\,\text{m s}^{-1}

, find the rate at which the string is being paid out.