 Hi and welcome to the session. Let us test as a following question. The question says, evaluate the following limits in exercises 1 to 22. Limit of pi r squared as r tends to 1. Before solving this question, we should know that if fx is a polynomial function, limit of x to a is equal to f of a. So, limit of fx is the value of f at the point x equals to a. The knowledge of this is the key idea in this question. Now, begin with the solution. In this question, we have to evaluate limit of pi r squared as r tends to 1. f is a polynomial. So, by the key idea, limit of pi r squared as r tends to 1 is equal to pi into 1 squared and this is equal to pi. Hence the required limit is pi. This completes the session by intake care.