$7\mathrm{.}11.$ Problems

"Use IDLE to write programs and include comments and test case for each assignment"

In Python Shell use print function to display the string "Good morning!".

In Python Shell evaluate the expression, $x=(3**2+\frac{20}{5}),$ and use print function to display $x.$

Write a program to take Celsius degree and converts it to Fahrenheit. Print out the Fahrenheit values as integers.

Hint:

Conversion Formula $f=\frac{9}{5^{**}}c+32$

Use input function to accept user input

Write a function that takes radius $r,$ and calculates and returns the volume of a sphere for $r>0$; return $0$ otherwise. $V=\frac{4}{3}{r}^3$

Hint: $=3\mathrm{.}14$