What is the radius of a cylinder if it has a volume of 769.3 cubic meters and a height of 5 meters? (use 3.14 for π.)

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?