What expression represents the area of a circle with a radius of 7 units

The area of the circle is 153.86 u²

And the expression is

a = π * (7 u) ²

Step-by-step explanation:

To solve this problem we need to use the area formula of a circle:

a = area

r = radius = 7 units

π = 3.14

a = π * r²

we replace with the known values

a = π * (7 u) ²

a = 3.14 * 49 u²

a = 153.86 u²

The area of the circle is 153.86 u²