1. The problem is to calculate the area $A$ of a circle using the formula $A = \pi r^2$ and then multiply the result by 12. 2. The formula for the area of a circle is: $$A = \pi r^2$$ where $r$ is the radius of the circle. 3. Given $r = 3$, substitute into the formula: $$A = 3.14 \times 3^2$$ 4. Calculate the square of the radius: $$3^2 = 9$$ 5. Multiply by $\pi$: $$A = 3.14 \times 9 = 28.26$$ 6. The user states $A = 56.52$, which seems to be a mistake because $3.14 \times 3 \times 3 = 28.26$, not 56.52. 7. Next, multiply the area by 12: $$28.26 \times 12 = 339.12$$ 8. The user shows $56.52 \times 12 = 678.24$, which is inconsistent with the correct area. Final answer: The correct area is $28.26$, and multiplying by 12 gives $339.12$.