Answer:
D. 480π cm²
Step-by-step explanation:
You want the area of a table 23 cm in radius that is not occupied by a dish that is 7 cm in radius.
Area
The area of each circle is given by ...
A = πr²
The area of the table is ...
A = π(23 cm)² = 529π cm²
The area of the dish is ...
A = π(7 cm)² = 49π cm²
The area of the table not occupied by the dish is the difference:
unoccupied area = (529π -49π) cm²
unoccupied area = 480π cm² . . . . . . . . . matches choice D
