If 81 ⋅ 432 = 34,992 , what is 8.1 × 4.32 ?

Question

Responses

3.4992
3.4992 - no response given

34,992
34,992 - incorrect

34.992
34.992 - not selected, this is the correct answer

349.92

Answer 1

To find the value of $8.1\times 4.32$, we can make use of the given equation $81\times 432=34,992$.

Notice that $8.1$ is $81$ divided by $10$ (or $81\times 0.1$) and $4.32$ is $432$ divided by $100$ (or $432\times 0.01$). Therefore, we can express $8.1\times 4.32$ as follows:

$$8.1\times 4.32=\left(\frac{81}{10}\right)\times \left(\frac{432}{100}\right)$$

This simplifies to:

$$=\frac{81\times 432}{10\times 100}=\frac{34,992}{1000}=34.992$$

Thus, the answer is $34.992$.

Answer 2

wrong if 81 . 432=34,992 i 8.1 * 4.32 = 34,992 she said the answer like

Answer 3

I apologize for any confusion. Let's clarify the calculations correctly based on the information provided.

From the statement provided, we know that:

$$81\times 432=34,992$$

Now, we want to find $8.1\times 4.32$.

Since $8.1$ is $81÷10$ and $4.32$ is $432÷100$, we can rewrite $8.1\times 4.32$ as:

$$8.1\times 4.32=\left(\frac{81}{10}\right)\times \left(\frac{432}{100}\right)$$

This can be simplified:

$$=\frac{81\times 432}{10\times 100}=\frac{34,992}{1000}=34.992$$

So $8.1\times 4.32=34.992$.

If you were told that $8.1\times 4.32=34,992$, that is incorrect. The correct answer is indeed 34.992. Thank you for your patience, and I hope this clears up any misunderstanding!