Answer:
28.26 cm²
Step-by-step explanation:
It's not the point O, but the circle O.
The area of a circle is given by the formula A = π r²
We already have r (3cm)... so we can plug it directly into the equation:
A = π r² = π 3² = 9π = 28.26 cm²
A = 28.27
A = π r^2
A = π 3^2
A= π (9)
A = 28.27433
