Final answer:
The area of a circle with a radius of 3 units is 9π square units when left in terms of π.
Step-by-step explanation:
The question asks us to evaluate the area (A) of a circle given the radius (r) is 3. To find the area of a circle, we use the formula A = πr². Since the value of π is approximately 3.14159... and is often left in terms of π for exact answers, we plug in r = 3 into the formula.
We get A = π×3² = π×9. Hence, the area A in terms of π is 9π square units. There is no need to use a calculator for this problem since the answer is given in terms of π, which means we do not convert π to its decimal equivalent.