$1.$ You are given the iris dataset to derive insight from. Using an appropriate library in R$,$ perform the following tasks:

Select petal length and sepal length from the given dataset

Filter the data to represent only those classes of flowers whose petal length is more than $5\mathrm{.}5$ units.

Create a new column $$flower area$$ to represent the total area occupied by the flower petals.

$2.$ You use a web api to collect data from the Spotify app database, from this Spotify dataset, perform the following tasks:

Visualize the distribution of a numerical variable $$song$\_$duration$.$

Add a layer of smooth density curve to the above plot.

Differentiate the plot based on the categorial variable $$song$\_$genre$$ using different colors.

$3.$ You are given a csv file named $$heart$\_$disease.csv$$ comprising of information about various factors affecting the presence of heart disease. Perform the following operations:

Read the CSV file into a dataframe $$hdf$.$

Display the summary statistics for the column $$cholestrol$.$

Create a new column BMI, while also adding the required variables.