The space inside the circle in square units is known as the

Concept of Area - Expii. Area is the space inside the shape. It's a measure of 2-D space, and the units for area are squared ("length squared").

Do they give you options?

Because I'm thinking it's area, but I don't know what your options are.

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.