Can someone please explain how to do this because I have no idea.

Find the perimeter of the figure shown above. a. 40 cm c. 52 cm b. 60 cm d. 75 cm select the best answer from the choices provided

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?