Which monomial represents the number of square units in the area of a circle with radius 3x 3 units?

9

Step-by-step explanation:

A monomial is an algebraic expression with one term.

So that,

area of a circle =

if r = 3, then;

area of the circle = x

                            = x 9

                            = 9

The area of the circle is 9 square units.

Therefore, the monomial the represent the number of square units in the area of the circle is 9 square units.

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25

8

step-by-step explanation: