a rectangle is placed around a semicircle as shown below. the width of the rectangle is 6 cm . find the area of the shaded region

What number produces an irrational number when multiplied by -1.25

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie