Problems involving trigonometric ratios of special right

How long is the base in a 30° degree right triangle if the shorter side is 8 units?

(please write your answer in algebraic-radical form)

(a)  

A ladder is leaning against a wall forming a 30° angle with the ground. If the ladder is 10 meters long, how high does it reach on the wall?

(please include "meters" as unit of measurement)

(a)  

A square has a diagonal of 12 meters. What is the perimeter of the square?

(please write your answer in algebraic-radical form)

(a)