Question

Classify the following expression as linear, quadratic, or cubic polynomials.
$\pi r^2$

Answer 1

The polynomials are classified by the degree of the polynomial. The degree of the polynomial is the highest power of the variable of the polynomial. If the degree is 1, the polynomial is linear. If the degree is 2 the polynomial is quadratic and if the degree is 3 the polynomial is cubic.

Here, the expression is $\pi r^2$

Therefore, the highest power is 2.

Also, degree is 2.

Hence, the expression is a quadratic polynomial.