What measuring tool and unit you would use to measure a rectangle explain

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.)

The surface area of the triangular prism is .

Find two consexutive odd integers such that the sum of their square is 650