1. Create an App Inventor app that calculates and displays a circle’s area and circumference. Ask users to supply a radius for the circle.
2. Create an App Inventor app that calculates and displays a rectangle’s area and perimeter. Ask users to supply the length and width for the rectangle.
3. Create an App Inventor app that converts temperatures from degrees Fahrenheit to degrees Celsius. Ask users for the temperature in degrees Fahrenheit, and use the following formula for the conversion:

C = 5/9(F – 32)

4. Create an App Inventor app that converts temperatures from degrees Celsius to degrees Fahrenheit. Ask users for the temperature in degrees Celsius, and then use the following formula for the conversion:

F = 9/5 * C + 32

1. Create an App Inventor app that combines Programming Exercises 3 and 4. It should allow users to choose to convert the temperature from Celsius to Fahrenheit and vice versa.
2. Create an App Inventor app that sends SMS text messages. Ask users to enter data that specifies the number to send the message to and the body of the message.