$\"\"$

Radius $\"\"$ of the spread of the oil leaking after $\"\"$ hours is $\"\"$ .

Since spread of oil leaking from a tanker is in the shape of a circle, area of oil slick is $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$

Area $\"\"$ of the oil slick as a function of the time $\"\"$ is $\"\"$ .

$\"\"$

Area $\"\"$ of the oil slick as a function of the time $\"\"$ is $\"\"$ .