24. (π(200-56)) : 0,5 = 
A. 6 
B. 12 
C. 18 
D. 24 
E. 60

Let's solve the expression step by step:

1. **Calculate the expression inside the parentheses**:
   \[
   200 - 56 = 144
   \]

2. **Multiply this result by \(\pi\)**:
   \[
   \pi \times 144 = 144\pi
   \]

3. **Now, divide by 0.5**:
   \[
   \frac{144\pi}{0.5} = 144\pi \times 2 = 288\pi
   \]

To find which of the provided options is closest, you would compare \(288\pi\) to the available choices. Since \(\pi\) is approximately 3.14159, we can approximate:

\[
288\pi \approx 288 \times 3.14159 \approx 904.32
\]

None of the provided options are close to 904.32, but since the calculation itself is correct, there may have been a mistake in the provided options or the problem setup.

Would you like further details or clarification on this? Here are some related questions:

1. What happens if we divide by a different number?
2. How would the result change if we added instead of subtracted inside the parentheses?
3. What if \(\pi\) were a different constant?
4. How would this change if the expression were squared at the end?
5. Could we estimate this calculation without a calculator?

**Tip:** In multiple-choice questions involving \(\pi\), calculating or approximating \(\pi\) early can help avoid mistakes.

Learn how to solve the math problem involving the expression π(200 - 56) ÷ 0.5 step-by-step. Includes calculation of arithmetic operations with π, suitable for high school students.

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