The angle of depression of the foot of a building from the top of a tower 36 m away is 30°. What is the height of the tower?
A box contains 286 pencils to be distributed among three children in the ratio of \( \frac{1}{2} \): \( \frac{1}{3} \): \( \frac{1}{4} \) Find the number of pencils received by the first child.
When is the National Civil Services Day celebrated in India?