Question

The correct answer (reported to the proper number of significant figures) to the following is ________.6.3 × 3.25 = ________

a. 20.475
b. 20.
c. 20.5
d. 21

Answer 1

To find the correct answer, we need to multiply 6.3 by 3.25. The answer should have two significant figures, so the correct answer is 20.5 (option c).

Step-by-step explanation:

To find the correct answer, we need to multiply 6.3 by 3.25.

When multiplying numbers, we count the number of significant figures in each number and choose the smallest number of significant figures to use in the final answer.

In this case, 6.3 has two significant figures and 3.25 has three significant figures. Therefore, the answer should have two significant figures.

Multiplying 6.3 by 3.25 gives us 20.475.

Since we need to round to two significant figures, the answer is 20.5.

So, the correct answer is 20.5 (option c).