Final answer:
The square root of 49 is 7, and the square root of 100 is 10. These values are obtained by determining which number, when multiplied by itself, results in the original number, 49 or 100 respectively.
Step-by-step explanation:
To find the square root of a number, you look for a value that, when multiplied by itself, gives the original number. The square root of 49 is 7 because 7 multiplied by 7 is 49. Similarly, to find the square root of 100, we find the number that multiplied by itself equals 100, which is 10. Therefore, the square root of 100 is 10. These operations are basic arithmetic problems that you can often solve in your head or use a calculator for verification.