Here are our solutions for the day 1 exercises in the 30 Days of Python series. Make sure you try the exercises yourself before checking out the solutions!

### §1) Print your age to the console.

For this exercise, we just need a single `print`

call. I'm 29, so my solution would look like this:

`print(29)`

### §2) Calculate and print the number of days, weeks, and months in 27 years.

Exercise 2 is a little more challenging as we have to do a little bit of maths. For this exercise, we don't have to worry about leap years, so we can just multiply the number of days, weeks, or months in a single year by `27`

.

```
print(27 * 365)
print(27 * 52)
print(27 * 12)
```

That should give us 9855 days, 1404 weeks, and 324 months.

### §3) Calculate and print the area of a circle with a radius of 5 units.

For this exercise we can be pretty loose with the value of pi, so I'm going to use `3.141`

.

If you don't remember how to calculate the area of a circle, the formula for the area is pi multiplied by the radius squared: commonly written as πr².

In code we can write this as follows:

`print(3.141 * 5 * 5)`

`3.141`

(pi) multiplied by `5`

squared, which is just `5`

times `5`

.

The exercise also tells us to look for additional operators, and there's actually an operator for exponents (`**`

) which we can use to square a number.

`print(3.141 * 5 ** 2)`

We can also use the `pow`

function to do the same thing with slightly different syntax:

`print(3.141 * pow(5, 2))`

The first value we provide to `pow`

is the base number, and the second value is the exponent. You can read about `pow`

in the official documentation.

All of these approaches are totally fine, and they all produce the exact same result. Using my approximate value for pi, we get `78.525`

as the area of the circle.