Part A is a square. Since all sides are equal it does not matter which side is measured. 1 m 100 cm.
A c sina b c sinv c sin90-a c cosa.
This is the equation used in our square footage calculator as well. Area b c² - b² 2 If you know one angle and hypotenuse you can use the law of sines. Heres a basic formula you can follow. S length of side.